diff --git a/engine/runtime/src/main/java/org/enso/interpreter/EnsoLanguage.java b/engine/runtime/src/main/java/org/enso/interpreter/EnsoLanguage.java
index 4a4298db4632..240a12cd7794 100644
--- a/engine/runtime/src/main/java/org/enso/interpreter/EnsoLanguage.java
+++ b/engine/runtime/src/main/java/org/enso/interpreter/EnsoLanguage.java
@@ -1,21 +1,11 @@
 package org.enso.interpreter;
 
-import com.oracle.truffle.api.CallTarget;
-import com.oracle.truffle.api.Option;
-import com.oracle.truffle.api.TruffleLanguage;
-import com.oracle.truffle.api.TruffleLogger;
-import com.oracle.truffle.api.debug.DebuggerTags;
-import com.oracle.truffle.api.frame.VirtualFrame;
-import com.oracle.truffle.api.instrumentation.ProvidedTags;
-import com.oracle.truffle.api.instrumentation.StandardTags;
-import com.oracle.truffle.api.nodes.ExecutableNode;
-import com.oracle.truffle.api.nodes.Node;
-import com.oracle.truffle.api.nodes.RootNode;
 import java.io.ByteArrayOutputStream;
 import java.io.PrintStream;
 import java.util.List;
 import java.util.Objects;
 import java.util.function.Consumer;
+
 import org.enso.compiler.Compiler;
 import org.enso.compiler.context.InlineContext;
 import org.enso.compiler.data.CompilerConfig;
@@ -50,6 +40,18 @@
 import org.graalvm.options.OptionKey;
 import org.graalvm.options.OptionType;
 
+import com.oracle.truffle.api.CallTarget;
+import com.oracle.truffle.api.Option;
+import com.oracle.truffle.api.TruffleLanguage;
+import com.oracle.truffle.api.TruffleLogger;
+import com.oracle.truffle.api.debug.DebuggerTags;
+import com.oracle.truffle.api.frame.VirtualFrame;
+import com.oracle.truffle.api.instrumentation.ProvidedTags;
+import com.oracle.truffle.api.instrumentation.StandardTags;
+import com.oracle.truffle.api.nodes.ExecutableNode;
+import com.oracle.truffle.api.nodes.Node;
+import com.oracle.truffle.api.nodes.RootNode;
+
 /**
  * The root of the Enso implementation.
  *
@@ -66,7 +68,7 @@
     version = LanguageInfo.VERSION,
     defaultMimeType = LanguageInfo.MIME_TYPE,
     characterMimeTypes = {LanguageInfo.MIME_TYPE},
-    contextPolicy = TruffleLanguage.ContextPolicy.SHARED,
+    contextPolicy = TruffleLanguage.ContextPolicy.EXCLUSIVE,
     dependentLanguages = {EpbLanguage.ID},
     fileTypeDetectors = FileDetector.class,
     services= { Timer.class, NotificationHandler.Forwarder.class, LockManager.class }
@@ -278,9 +280,15 @@ protected ExecutableNode parse(InlineParsingRequest request) throws InlineParsin
       if (exprNode.isDefined()) {
         var language = EnsoLanguage.get(exprNode.get());
         return new ExecutableNode(language) {
+          @Child
+          private ExpressionNode expr;
+
           @Override
           public Object execute(VirtualFrame frame) {
-            return exprNode.get().executeGeneric(frame);
+            if (expr == null) {
+              expr = insert(exprNode.get());
+            }
+            return expr.executeGeneric(frame);
           }
         };
       }
diff --git a/engine/runtime/src/main/java/org/enso/interpreter/runtime/EnsoContext.java b/engine/runtime/src/main/java/org/enso/interpreter/runtime/EnsoContext.java
index 0cd70d133a70..4008b8124306 100644
--- a/engine/runtime/src/main/java/org/enso/interpreter/runtime/EnsoContext.java
+++ b/engine/runtime/src/main/java/org/enso/interpreter/runtime/EnsoContext.java
@@ -1,27 +1,19 @@
 package org.enso.interpreter.runtime;
 
-import com.oracle.truffle.api.CompilerDirectives.CompilationFinal;
-import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary;
-import com.oracle.truffle.api.TruffleFile;
-import com.oracle.truffle.api.TruffleLanguage;
-import com.oracle.truffle.api.TruffleLanguage.Env;
-import com.oracle.truffle.api.TruffleLogger;
-import com.oracle.truffle.api.interop.InteropLibrary;
-import com.oracle.truffle.api.interop.UnknownIdentifierException;
-import com.oracle.truffle.api.interop.UnsupportedMessageException;
-import com.oracle.truffle.api.nodes.Node;
-import com.oracle.truffle.api.object.Shape;
 import java.io.BufferedReader;
 import java.io.File;
 import java.io.InputStream;
 import java.io.InputStreamReader;
 import java.io.PrintStream;
 import java.util.Arrays;
+import java.util.HashSet;
 import java.util.List;
 import java.util.Optional;
+import java.util.Set;
 import java.util.UUID;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.atomic.AtomicLong;
+
 import org.enso.compiler.Compiler;
 import org.enso.compiler.PackageRepository;
 import org.enso.compiler.PackageRepositoryUtils;
@@ -32,6 +24,7 @@
 import org.enso.interpreter.EnsoLanguage;
 import org.enso.interpreter.OptionsHelper;
 import org.enso.interpreter.instrument.NotificationHandler;
+import org.enso.interpreter.runtime.Module;
 import org.enso.interpreter.runtime.builtin.Builtins;
 import org.enso.interpreter.runtime.data.Type;
 import org.enso.interpreter.runtime.scope.TopLevelScope;
@@ -45,6 +38,22 @@
 import org.enso.polyglot.LanguageInfo;
 import org.enso.polyglot.RuntimeOptions;
 import org.graalvm.options.OptionKey;
+
+import com.oracle.truffle.api.Assumption;
+import com.oracle.truffle.api.CompilerDirectives;
+import com.oracle.truffle.api.CompilerDirectives.CompilationFinal;
+import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary;
+import com.oracle.truffle.api.Truffle;
+import com.oracle.truffle.api.TruffleFile;
+import com.oracle.truffle.api.TruffleLanguage;
+import com.oracle.truffle.api.TruffleLanguage.Env;
+import com.oracle.truffle.api.TruffleLogger;
+import com.oracle.truffle.api.interop.InteropLibrary;
+import com.oracle.truffle.api.interop.UnknownIdentifierException;
+import com.oracle.truffle.api.interop.UnsupportedMessageException;
+import com.oracle.truffle.api.nodes.Node;
+import com.oracle.truffle.api.object.Shape;
+
 import scala.jdk.javaapi.OptionConverters;
 
 /**
@@ -179,7 +188,35 @@ public void initialize() {
    *     com.oracle.truffle.api.TruffleContext}.
    */
   public static EnsoContext get(Node node) {
-    return REFERENCE.get(node);
+    var ctx = REFERENCE.get(node);
+    if (checkNodes.isValid() && !CompilerDirectives.isPartialEvaluationConstant(ctx)) {
+      reportSlowContextAccess(node);
+    }
+    return ctx;
+  }
+
+  private static final Assumption checkNodes = Truffle.getRuntime().createAssumption("context check");
+  private static final Set<Node> reportedNulllRootNodes = new HashSet<>();
+  private static long checkUntil = Long.MAX_VALUE;
+
+  @TruffleBoundary
+  private static void reportSlowContextAccess(Node n) {
+    if (System.currentTimeMillis() > checkUntil) {
+      checkNodes.invalidate();
+    }
+    if (reportedNulllRootNodes.add(n)) {
+      var ex = new Exception("""
+        no root node for {n}
+        with section: {s}
+        with root nodes: {r}
+        """
+          .replace("{n}", "" + n)
+          .replace("{s}", "" + n.getEncapsulatingSourceSection())
+          .replace("{r}", "" + n.getRootNode())
+      );
+      ex.printStackTrace();
+      checkUntil = System.currentTimeMillis() + 10000;
+    }
   }
 
   public static TruffleLanguage.ContextReference<EnsoContext> getReference() {
diff --git a/engine/runtime/src/main/java/org/enso/interpreter/runtime/callable/atom/AtomConstructor.java b/engine/runtime/src/main/java/org/enso/interpreter/runtime/callable/atom/AtomConstructor.java
index 8647d7675d63..6705b6e0cee1 100644
--- a/engine/runtime/src/main/java/org/enso/interpreter/runtime/callable/atom/AtomConstructor.java
+++ b/engine/runtime/src/main/java/org/enso/interpreter/runtime/callable/atom/AtomConstructor.java
@@ -3,6 +3,7 @@
 import com.oracle.truffle.api.CompilerDirectives;
 import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary;
 import com.oracle.truffle.api.RootCallTarget;
+import com.oracle.truffle.api.dsl.Cached;
 import com.oracle.truffle.api.interop.ArityException;
 import com.oracle.truffle.api.interop.InteropLibrary;
 import com.oracle.truffle.api.interop.TruffleObject;
@@ -347,7 +348,7 @@ boolean hasType() {
   }
 
   @ExportMessage
-  Type getType(@CachedLibrary("this") TypesLibrary thisLib) {
+  Type getType(@CachedLibrary("this") TypesLibrary thisLib, @Cached("1") int ignore) {
     return EnsoContext.get(thisLib).getBuiltins().function();
   }
 }
diff --git a/engine/runtime/src/main/java/org/enso/interpreter/runtime/callable/function/Function.java b/engine/runtime/src/main/java/org/enso/interpreter/runtime/callable/function/Function.java
index 1052c0ee5082..77619ca93247 100644
--- a/engine/runtime/src/main/java/org/enso/interpreter/runtime/callable/function/Function.java
+++ b/engine/runtime/src/main/java/org/enso/interpreter/runtime/callable/function/Function.java
@@ -7,7 +7,11 @@
 import com.oracle.truffle.api.dsl.Idempotent;
 import com.oracle.truffle.api.dsl.Specialization;
 import com.oracle.truffle.api.frame.MaterializedFrame;
-import com.oracle.truffle.api.interop.*;
+import com.oracle.truffle.api.interop.ArityException;
+import com.oracle.truffle.api.interop.InteropLibrary;
+import com.oracle.truffle.api.interop.TruffleObject;
+import com.oracle.truffle.api.interop.UnknownIdentifierException;
+import com.oracle.truffle.api.interop.UnsupportedTypeException;
 import com.oracle.truffle.api.library.CachedLibrary;
 import com.oracle.truffle.api.library.ExportLibrary;
 import com.oracle.truffle.api.library.ExportMessage;
@@ -380,7 +384,7 @@ boolean hasType() {
   }
 
   @ExportMessage
-  Type getType(@CachedLibrary("this") TypesLibrary thisLib) {
+  Type getType(@CachedLibrary("this") TypesLibrary thisLib, @Cached(value = "1") int ignore) {
     return EnsoContext.get(thisLib).getBuiltins().function();
   }
 
diff --git a/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/Array.java b/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/Array.java
index 9fad5a078b40..3939bd273c19 100644
--- a/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/Array.java
+++ b/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/Array.java
@@ -242,7 +242,7 @@ boolean isLimitReached(@Shared("warnsLib") @CachedLibrary(limit = "3") WarningsL
   }
 
   @ExportMessage
-  Type getType(@CachedLibrary("this") TypesLibrary thisLib) {
+  Type getType(@CachedLibrary("this") TypesLibrary thisLib, @Cached("1") int ignore) {
     return EnsoContext.get(thisLib).getBuiltins().array();
   }
 }
diff --git a/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/ArrayProxy.java b/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/ArrayProxy.java
index ec5d882825ef..513d9a8373bf 100644
--- a/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/ArrayProxy.java
+++ b/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/ArrayProxy.java
@@ -116,7 +116,7 @@ boolean hasType() {
   }
 
   @ExportMessage
-  Type getType(@CachedLibrary("this") TypesLibrary thisLib) {
+  Type getType(@CachedLibrary("this") TypesLibrary thisLib, @Cached("1") int ignore) {
     return EnsoContext.get(thisLib).getBuiltins().array();
   }
 }
diff --git a/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/EnsoDate.java b/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/EnsoDate.java
index 9b981ea340d0..9a47ba474feb 100644
--- a/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/EnsoDate.java
+++ b/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/EnsoDate.java
@@ -1,6 +1,7 @@
 package org.enso.interpreter.runtime.data;
 
 import com.oracle.truffle.api.CompilerDirectives;
+import com.oracle.truffle.api.dsl.Cached;
 import com.oracle.truffle.api.interop.InteropLibrary;
 import com.oracle.truffle.api.interop.TruffleObject;
 import com.oracle.truffle.api.interop.UnsupportedMessageException;
@@ -94,7 +95,7 @@ boolean hasType() {
   }
 
   @ExportMessage
-  Type getType(@CachedLibrary("this") TypesLibrary thisLib) {
+  Type getType(@CachedLibrary("this") TypesLibrary thisLib, @Cached("1") int ignore) {
     return EnsoContext.get(thisLib).getBuiltins().date();
   }
 
diff --git a/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/EnsoDateTime.java b/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/EnsoDateTime.java
index bd726f3e77ef..7568c8869c85 100644
--- a/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/EnsoDateTime.java
+++ b/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/EnsoDateTime.java
@@ -1,6 +1,7 @@
 package org.enso.interpreter.runtime.data;
 
 import com.oracle.truffle.api.CompilerDirectives;
+import com.oracle.truffle.api.dsl.Cached;
 import com.oracle.truffle.api.interop.InteropLibrary;
 import com.oracle.truffle.api.interop.TruffleObject;
 import com.oracle.truffle.api.interop.UnsupportedMessageException;
@@ -220,7 +221,7 @@ boolean hasType() {
   }
 
   @ExportMessage
-  Type getType(@CachedLibrary("this") TypesLibrary thisLib) {
+  Type getType(@CachedLibrary("this") TypesLibrary thisLib, @Cached("1") int ignore) {
     return EnsoContext.get(thisLib).getBuiltins().dateTime();
   }
 
diff --git a/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/EnsoDuration.java b/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/EnsoDuration.java
index 3d530f4e22ea..345744e5a9ce 100644
--- a/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/EnsoDuration.java
+++ b/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/EnsoDuration.java
@@ -1,6 +1,7 @@
 package org.enso.interpreter.runtime.data;
 
 import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary;
+import com.oracle.truffle.api.dsl.Cached;
 import com.oracle.truffle.api.interop.InteropLibrary;
 import com.oracle.truffle.api.interop.TruffleObject;
 import com.oracle.truffle.api.interop.UnsupportedMessageException;
@@ -35,7 +36,7 @@ boolean hasType() {
   }
 
   @ExportMessage
-  Type getType(@CachedLibrary("this") TypesLibrary thisLib) {
+  Type getType(@CachedLibrary("this") TypesLibrary thisLib, @Cached("1") int ignore) {
     return EnsoContext.get(thisLib).getBuiltins().duration();
   }
 
diff --git a/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/EnsoFile.java b/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/EnsoFile.java
index 94dfaaa22a25..a041bc8a964b 100644
--- a/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/EnsoFile.java
+++ b/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/EnsoFile.java
@@ -10,7 +10,9 @@
 import com.oracle.truffle.api.library.CachedLibrary;
 import com.oracle.truffle.api.library.ExportLibrary;
 import com.oracle.truffle.api.library.ExportMessage;
+
 import java.util.function.IntFunction;
+
 import org.enso.interpreter.dsl.Builtin;
 import org.enso.interpreter.runtime.EnsoContext;
 import org.enso.interpreter.runtime.error.PanicException;
@@ -29,6 +31,8 @@
 import java.time.ZonedDateTime;
 import java.util.Set;
 
+import com.oracle.truffle.api.dsl.Cached;
+
 /**
  * A wrapper for {@link TruffleFile} objects exposed to the language. For methods documentation
  * please refer to {@link TruffleFile}.
@@ -340,7 +344,7 @@ boolean hasType() {
   }
 
   @ExportMessage
-  Type getType(@CachedLibrary("this") TypesLibrary thisLib) {
+  Type getType(@CachedLibrary("this") TypesLibrary thisLib, @Cached("1") int ignore) {
     return EnsoContext.get(thisLib).getBuiltins().file();
   }
 }
diff --git a/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/EnsoTimeOfDay.java b/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/EnsoTimeOfDay.java
index 41407f522fcd..344b3f1a75ef 100644
--- a/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/EnsoTimeOfDay.java
+++ b/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/EnsoTimeOfDay.java
@@ -2,6 +2,7 @@
 
 import com.oracle.truffle.api.CompilerDirectives;
 import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary;
+import com.oracle.truffle.api.dsl.Cached;
 import com.oracle.truffle.api.interop.InteropLibrary;
 import com.oracle.truffle.api.interop.TruffleObject;
 import com.oracle.truffle.api.interop.UnsupportedMessageException;
@@ -159,7 +160,7 @@ boolean hasType() {
   }
 
   @ExportMessage
-  Type getType(@CachedLibrary("this") TypesLibrary thisLib) {
+  Type getType(@CachedLibrary("this") TypesLibrary thisLib, @Cached("1") int ignore) {
     return EnsoContext.get(thisLib).getBuiltins().timeOfDay();
   }
 
diff --git a/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/EnsoTimeZone.java b/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/EnsoTimeZone.java
index 07eff8f731cb..7186835cd431 100644
--- a/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/EnsoTimeZone.java
+++ b/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/EnsoTimeZone.java
@@ -1,6 +1,7 @@
 package org.enso.interpreter.runtime.data;
 
 import com.oracle.truffle.api.CompilerDirectives;
+import com.oracle.truffle.api.dsl.Cached;
 import com.oracle.truffle.api.interop.InteropLibrary;
 import com.oracle.truffle.api.interop.TruffleObject;
 import com.oracle.truffle.api.library.CachedLibrary;
@@ -99,7 +100,7 @@ boolean hasType() {
   }
 
   @ExportMessage
-  Type getType(@CachedLibrary("this") TypesLibrary thisLib) {
+  Type getType(@CachedLibrary("this") TypesLibrary thisLib, @Cached("1") int ignore) {
     return EnsoContext.get(thisLib).getBuiltins().timeZone();
   }
 
diff --git a/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/ManagedResource.java b/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/ManagedResource.java
index c288c9d08026..d0fd4f644ce0 100644
--- a/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/ManagedResource.java
+++ b/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/ManagedResource.java
@@ -1,5 +1,6 @@
 package org.enso.interpreter.runtime.data;
 
+import com.oracle.truffle.api.dsl.Cached;
 import com.oracle.truffle.api.interop.InteropLibrary;
 import com.oracle.truffle.api.interop.TruffleObject;
 import com.oracle.truffle.api.library.CachedLibrary;
@@ -84,7 +85,7 @@ boolean hasType() {
   }
 
   @ExportMessage
-  Type getType(@CachedLibrary("this") TypesLibrary thisLib) {
+  Type getType(@CachedLibrary("this") TypesLibrary thisLib, @Cached("1") int ignore) {
     return EnsoContext.get(thisLib).getBuiltins().managedResource();
   }
 }
diff --git a/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/Ref.java b/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/Ref.java
index 553c7e871c51..a1bc65dc78ee 100644
--- a/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/Ref.java
+++ b/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/Ref.java
@@ -1,5 +1,6 @@
 package org.enso.interpreter.runtime.data;
 
+import com.oracle.truffle.api.dsl.Cached;
 import com.oracle.truffle.api.interop.InteropLibrary;
 import com.oracle.truffle.api.interop.TruffleObject;
 import com.oracle.truffle.api.library.CachedLibrary;
@@ -60,7 +61,7 @@ boolean hasType() {
   }
 
   @ExportMessage
-  Type getType(@CachedLibrary("this") TypesLibrary thisLib) {
+  Type getType(@CachedLibrary("this") TypesLibrary thisLib, @Cached("1") int ignore) {
     return EnsoContext.get(thisLib).getBuiltins().ref();
   }
 }
diff --git a/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/Vector.java b/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/Vector.java
index a966d47a5d99..a75e48056a06 100644
--- a/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/Vector.java
+++ b/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/Vector.java
@@ -196,7 +196,7 @@ boolean hasType() {
   }
 
   @ExportMessage
-  Type getType(@CachedLibrary("this") TypesLibrary thisLib) {
+  Type getType(@CachedLibrary("this") TypesLibrary thisLib, @Cached("1") int ignore) {
     return EnsoContext.get(thisLib).getBuiltins().vector();
   }
 
diff --git a/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/hash/EnsoHashMap.java b/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/hash/EnsoHashMap.java
index c07a405b9933..fc95c9e5e29f 100644
--- a/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/hash/EnsoHashMap.java
+++ b/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/hash/EnsoHashMap.java
@@ -149,7 +149,7 @@ boolean hasType() {
   }
 
   @ExportMessage(library = TypesLibrary.class)
-  Type getType(@CachedLibrary("this") TypesLibrary thisLib) {
+  Type getType(@CachedLibrary("this") TypesLibrary thisLib, @Cached("1") int ignore) {
     return EnsoContext.get(thisLib).getBuiltins().map();
   }
 
diff --git a/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/text/Text.java b/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/text/Text.java
index fd920193c5da..a54645c52ff3 100644
--- a/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/text/Text.java
+++ b/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/text/Text.java
@@ -1,5 +1,17 @@
 package org.enso.interpreter.runtime.data.text;
 
+import java.util.ArrayDeque;
+import java.util.Deque;
+import java.util.concurrent.locks.Lock;
+import java.util.concurrent.locks.ReentrantLock;
+
+import org.enso.interpreter.dsl.Builtin;
+import org.enso.interpreter.node.expression.builtin.text.util.ToJavaStringNode;
+import org.enso.interpreter.runtime.EnsoContext;
+import org.enso.interpreter.runtime.data.Type;
+import org.enso.interpreter.runtime.library.dispatch.TypesLibrary;
+import org.enso.polyglot.common_utils.Core_Text_Utils;
+
 import com.ibm.icu.text.Normalizer2;
 import com.oracle.truffle.api.CompilerDirectives;
 import com.oracle.truffle.api.dsl.Cached;
@@ -8,17 +20,6 @@
 import com.oracle.truffle.api.library.CachedLibrary;
 import com.oracle.truffle.api.library.ExportLibrary;
 import com.oracle.truffle.api.library.ExportMessage;
-import java.util.ArrayDeque;
-import java.util.Deque;
-import org.enso.interpreter.node.expression.builtin.text.util.ToJavaStringNode;
-import org.enso.interpreter.runtime.EnsoContext;
-import org.enso.interpreter.runtime.data.Type;
-import org.enso.interpreter.runtime.library.dispatch.TypesLibrary;
-
-import java.util.concurrent.locks.Lock;
-import java.util.concurrent.locks.ReentrantLock;
-import org.enso.interpreter.dsl.Builtin;
-import org.enso.polyglot.common_utils.Core_Text_Utils;
 
 /** The main runtime type for Enso's Text. */
 @ExportLibrary(InteropLibrary.class)
@@ -229,7 +230,7 @@ boolean hasType() {
   }
 
   @ExportMessage
-  Type getType(@CachedLibrary("this") TypesLibrary thisLib) {
+  Type getType(@CachedLibrary("this") TypesLibrary thisLib, @Cached(value="1") int ignore) {
     return EnsoContext.get(thisLib).getBuiltins().text();
   }
 
diff --git a/engine/runtime/src/main/java/org/enso/interpreter/runtime/error/DataflowError.java b/engine/runtime/src/main/java/org/enso/interpreter/runtime/error/DataflowError.java
index de64f4562fca..5ca69cda536f 100644
--- a/engine/runtime/src/main/java/org/enso/interpreter/runtime/error/DataflowError.java
+++ b/engine/runtime/src/main/java/org/enso/interpreter/runtime/error/DataflowError.java
@@ -2,6 +2,7 @@
 
 import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary;
 import com.oracle.truffle.api.TruffleStackTrace;
+import com.oracle.truffle.api.dsl.Cached;
 import com.oracle.truffle.api.exception.AbstractTruffleException;
 import com.oracle.truffle.api.interop.InteropLibrary;
 import com.oracle.truffle.api.interop.UnsupportedMessageException;
@@ -136,7 +137,7 @@ boolean hasSpecialDispatch() {
   }
 
   @ExportMessage
-  Type getType(@CachedLibrary("this") TypesLibrary thisLib) {
+  Type getType(@CachedLibrary("this") TypesLibrary thisLib, @Cached("1") int ignore) {
     return EnsoContext.get(thisLib).getBuiltins().dataflowError();
   }
 }
diff --git a/engine/runtime/src/main/java/org/enso/interpreter/runtime/error/PanicException.java b/engine/runtime/src/main/java/org/enso/interpreter/runtime/error/PanicException.java
index 6a7549bf595e..13712ed27538 100644
--- a/engine/runtime/src/main/java/org/enso/interpreter/runtime/error/PanicException.java
+++ b/engine/runtime/src/main/java/org/enso/interpreter/runtime/error/PanicException.java
@@ -144,7 +144,7 @@ Object getExceptionMessage(
   }
 
   @ExportMessage
-  Type getType(@CachedLibrary("this") TypesLibrary thisLib) {
+  Type getType(@CachedLibrary("this") TypesLibrary thisLib, @Cached("1") int ignore) {
     return EnsoContext.get(thisLib).getBuiltins().panic();
   }
 
diff --git a/engine/runtime/src/main/java/org/enso/interpreter/runtime/error/Warning.java b/engine/runtime/src/main/java/org/enso/interpreter/runtime/error/Warning.java
index 11900ed6c437..d9e71fb4a701 100644
--- a/engine/runtime/src/main/java/org/enso/interpreter/runtime/error/Warning.java
+++ b/engine/runtime/src/main/java/org/enso/interpreter/runtime/error/Warning.java
@@ -1,6 +1,7 @@
 package org.enso.interpreter.runtime.error;
 
 import com.oracle.truffle.api.CompilerDirectives;
+import com.oracle.truffle.api.dsl.Cached;
 import com.oracle.truffle.api.interop.InteropLibrary;
 import com.oracle.truffle.api.interop.InvalidArrayIndexException;
 import com.oracle.truffle.api.interop.TruffleObject;
@@ -240,7 +241,7 @@ boolean hasType() {
   }
 
   @ExportMessage
-  Type getType(@CachedLibrary("this") TypesLibrary thisLib) {
+  Type getType(@CachedLibrary("this") TypesLibrary thisLib, @Cached("1") int ignore) {
     return EnsoContext.get(thisLib).getBuiltins().warning();
   }
 }
diff --git a/engine/runtime/src/main/java/org/enso/interpreter/runtime/library/dispatch/DefaultBooleanExports.java b/engine/runtime/src/main/java/org/enso/interpreter/runtime/library/dispatch/DefaultBooleanExports.java
index 490c2d9876a3..66af16b6a9e0 100644
--- a/engine/runtime/src/main/java/org/enso/interpreter/runtime/library/dispatch/DefaultBooleanExports.java
+++ b/engine/runtime/src/main/java/org/enso/interpreter/runtime/library/dispatch/DefaultBooleanExports.java
@@ -1,5 +1,6 @@
 package org.enso.interpreter.runtime.library.dispatch;
 
+import com.oracle.truffle.api.dsl.Cached;
 import com.oracle.truffle.api.library.CachedLibrary;
 import com.oracle.truffle.api.library.ExportLibrary;
 import com.oracle.truffle.api.library.ExportMessage;
@@ -14,7 +15,10 @@ static boolean hasType(Boolean receiver) {
   }
 
   @ExportMessage
-  static Type getType(Boolean receiver, @CachedLibrary("receiver") TypesLibrary thisLib) {
+  static Type getType(
+      Boolean receiver,
+      @CachedLibrary("receiver") TypesLibrary thisLib,
+      @Cached(value = "1") int ignore) {
     return EnsoContext.get(thisLib).getBuiltins().bool().getType();
   }
 }
diff --git a/engine/runtime/src/main/java/org/enso/interpreter/runtime/library/dispatch/DefaultDoubleExports.java b/engine/runtime/src/main/java/org/enso/interpreter/runtime/library/dispatch/DefaultDoubleExports.java
index c0a6b4a32f5d..fba3a51aaa35 100644
--- a/engine/runtime/src/main/java/org/enso/interpreter/runtime/library/dispatch/DefaultDoubleExports.java
+++ b/engine/runtime/src/main/java/org/enso/interpreter/runtime/library/dispatch/DefaultDoubleExports.java
@@ -1,5 +1,6 @@
 package org.enso.interpreter.runtime.library.dispatch;
 
+import com.oracle.truffle.api.dsl.Cached;
 import com.oracle.truffle.api.library.CachedLibrary;
 import com.oracle.truffle.api.library.ExportLibrary;
 import com.oracle.truffle.api.library.ExportMessage;
@@ -14,7 +15,10 @@ static boolean hasType(Double receiver) {
   }
 
   @ExportMessage
-  static Type getType(Double receiver, @CachedLibrary("receiver") TypesLibrary thisLib) {
+  static Type getType(
+      Double receiver,
+      @CachedLibrary("receiver") TypesLibrary thisLib,
+      @Cached(value = "1") int ignore) {
     return EnsoContext.get(thisLib).getBuiltins().number().getDecimal();
   }
 }
diff --git a/engine/runtime/src/main/java/org/enso/interpreter/runtime/library/dispatch/DefaultLongExports.java b/engine/runtime/src/main/java/org/enso/interpreter/runtime/library/dispatch/DefaultLongExports.java
index 564c1f950db1..1b9888014e02 100644
--- a/engine/runtime/src/main/java/org/enso/interpreter/runtime/library/dispatch/DefaultLongExports.java
+++ b/engine/runtime/src/main/java/org/enso/interpreter/runtime/library/dispatch/DefaultLongExports.java
@@ -1,5 +1,6 @@
 package org.enso.interpreter.runtime.library.dispatch;
 
+import com.oracle.truffle.api.dsl.Cached;
 import com.oracle.truffle.api.library.CachedLibrary;
 import com.oracle.truffle.api.library.ExportLibrary;
 import com.oracle.truffle.api.library.ExportMessage;
@@ -14,7 +15,8 @@ static boolean hasType(Long receiver) {
   }
 
   @ExportMessage
-  static Type getType(Long receiver, @CachedLibrary("receiver") TypesLibrary thisLib) {
+  static Type getType(
+      Long receiver, @CachedLibrary("receiver") TypesLibrary thisLib, @Cached("1") int ignore) {
     return EnsoContext.get(thisLib).getBuiltins().number().getSmallInteger();
   }
 }
diff --git a/engine/runtime/src/main/java/org/enso/interpreter/runtime/number/EnsoBigInteger.java b/engine/runtime/src/main/java/org/enso/interpreter/runtime/number/EnsoBigInteger.java
index 1bb093696b27..d9a3f513011d 100644
--- a/engine/runtime/src/main/java/org/enso/interpreter/runtime/number/EnsoBigInteger.java
+++ b/engine/runtime/src/main/java/org/enso/interpreter/runtime/number/EnsoBigInteger.java
@@ -7,6 +7,7 @@
 import org.enso.interpreter.runtime.library.dispatch.TypesLibrary;
 
 import com.oracle.truffle.api.CompilerDirectives;
+import com.oracle.truffle.api.dsl.Cached;
 import com.oracle.truffle.api.interop.InteropLibrary;
 import com.oracle.truffle.api.interop.TruffleObject;
 import com.oracle.truffle.api.interop.UnsupportedMessageException;
@@ -144,7 +145,7 @@ boolean hasType() {
   }
 
   @ExportMessage
-  Type getType(@CachedLibrary("this") TypesLibrary thisLib) {
+  Type getType(@CachedLibrary("this") TypesLibrary thisLib, @Cached("1") int ignore) {
     return EnsoContext.get(thisLib).getBuiltins().number().getBigInteger();
   }
 
diff --git a/engine/runtime/src/test/java/org/enso/interpreter/test/SharedEngineTest.java b/engine/runtime/src/test/java/org/enso/interpreter/test/SharedEngineTest.java
new file mode 100644
index 000000000000..22db92511579
--- /dev/null
+++ b/engine/runtime/src/test/java/org/enso/interpreter/test/SharedEngineTest.java
@@ -0,0 +1,60 @@
+package org.enso.interpreter.test;
+
+import java.io.ByteArrayOutputStream;
+import java.nio.file.Paths;
+
+import org.enso.polyglot.RuntimeOptions;
+import org.graalvm.polyglot.Context;
+import org.graalvm.polyglot.Engine;
+import org.graalvm.polyglot.Source;
+import static org.junit.Assert.assertEquals;
+import org.junit.Before;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+public class SharedEngineTest extends TestBase {
+  private static Engine sharedEngine;
+  private Context ctx;
+
+  @BeforeClass
+  public static void initializeSharedEngine() {
+    var out = new ByteArrayOutputStream();
+    sharedEngine = Engine.newBuilder()
+      .allowExperimentalOptions(true)
+      .logHandler(out)
+      .option(RuntimeOptions.STRICT_ERRORS, "true")
+      .option(
+        RuntimeOptions.LANGUAGE_HOME_OVERRIDE,
+        Paths.get("../../test/micro-distribution/component").toFile().getAbsolutePath()
+      ).build();
+  }
+
+  @Before
+  public void initializeContext() {
+    this.ctx = defaultContextBuilder().engine(sharedEngine).build();
+  }
+
+  private final Source typeCase = Source.newBuilder("enso", """
+    from Standard.Base import Vector, Text, Number
+
+    check x = case x of
+        _ : Vector -> 1
+        _ : Text -> 2
+        _ : Number -> 3
+        _ -> 4
+    """,
+    "type_case.enso"
+  ).buildLiteral();
+
+  @Test
+  public void typeCaseFirstRun() {
+    var fn = this.ctx.eval(typeCase).invokeMember("eval_expression", "check");
+    var r = fn.execute("Hi");
+    assertEquals(2, r.asInt());
+  }
+
+  @Test
+  public void typeCaseSecondRun() {
+    typeCaseFirstRun();
+  }
+}
diff --git a/engine/runtime/src/test/java/org/enso/interpreter/test/TestBase.java b/engine/runtime/src/test/java/org/enso/interpreter/test/TestBase.java
index d26f3d5138ea..ff92b96be3da 100644
--- a/engine/runtime/src/test/java/org/enso/interpreter/test/TestBase.java
+++ b/engine/runtime/src/test/java/org/enso/interpreter/test/TestBase.java
@@ -39,7 +39,7 @@ protected static Context createDefaultContext(OutputStream out) {
     return context;
   }
 
-  private static Context.Builder defaultContextBuilder() {
+  protected static Context.Builder defaultContextBuilder() {
     return Context.newBuilder()
         .allowExperimentalOptions(true)
         .allowIO(IOAccess.ALL)