diff --git a/example/assets/example.json b/example/assets/example.json
index d5419d40b..dac41c33f 100644
--- a/example/assets/example.json
+++ b/example/assets/example.json
@@ -10,7 +10,7 @@
             },
             {
               "insert": "Welcome to",
-              "data": {
+              "attributes": {
                 "bold": true
               }
             },
@@ -19,7 +19,7 @@
             },
             {
               "insert": "AppFlowy Editor",
-              "data": {
+              "attributes": {
                 "href": "appflowy.io",
                 "italic": true,
                 "bold": true
@@ -45,7 +45,7 @@
             },
             {
               "insert": "highly customizable",
-              "data": {
+              "attributes": {
                 "bold": true
               }
             },
@@ -54,7 +54,7 @@
             },
             {
               "insert": "rich-text editor",
-              "data": {
+              "attributes": {
                 "italic": true
               }
             },
@@ -63,7 +63,7 @@
             },
             {
               "insert": "Flutter",
-              "data": {
+              "attributes": {
                 "underline": true
               }
             }
@@ -125,7 +125,7 @@
             },
             {
               "insert": "AppFlowy Editor",
-              "data": {
+              "attributes": {
                 "italic": true,
                 "bold": true,
                 "textColor": "0xffD70040",
@@ -151,7 +151,6 @@
             "insert": "Use / to insert blocks"
           }]
         }
-
       },
       {
         "type": "bulleted_list",
diff --git a/example/lib/pages/simple_editor.dart b/example/lib/pages/simple_editor.dart
index b40bcb966..b6cd72c3a 100644
--- a/example/lib/pages/simple_editor.dart
+++ b/example/lib/pages/simple_editor.dart
@@ -106,39 +106,8 @@ class SimpleEditor extends StatelessWidget {
     EditorState editorState,
     ScrollController? scrollController,
   ) {
-    final editorStyle = EditorStyle.desktop(
-      // Example for customizing a new attribute key.
-      textSpanDecorator: (textInsert, textSpan) {
-        final attributes = textInsert.attributes;
-        if (attributes == null) {
-          return textSpan;
-        }
-        final mention = attributes['mention'] as Map?;
-        if (mention != null) {
-          return WidgetSpan(
-            child: MouseRegion(
-              cursor: SystemMouseCursors.click,
-              child: GestureDetector(
-                behavior: HitTestBehavior.translucent,
-                onTap: () {
-                  debugPrint('at');
-                },
-                child: Row(
-                  mainAxisSize: MainAxisSize.min,
-                  children: [
-                    const Icon(Icons.edit_document),
-                    Text(mention['id']),
-                  ],
-                ),
-              ),
-            ),
-          );
-        }
-        return textSpan;
-      },
-    );
     return AppFlowyEditor.standard(
-      editorStyle: editorStyle,
+      editorStyle: const EditorStyle.desktop(),
       editorState: editorState,
       scrollController: scrollController,
     );
diff --git a/lib/src/core/transform/transaction.dart b/lib/src/core/transform/transaction.dart
index 044787935..21389a0ef 100644
--- a/lib/src/core/transform/transaction.dart
+++ b/lib/src/core/transform/transaction.dart
@@ -677,7 +677,13 @@ extension on Delta {
     if (index <= 0) {
       return null;
     }
-
-    return slice(index - 1, index).first.attributes;
+    final attributes = slice(index - 1, index).first.attributes;
+    if (attributes == null ||
+        !attributes.keys.every(
+          (element) => FlowyRichTextKeys.supportSliced.contains(element),
+        )) {
+      return null;
+    }
+    return attributes;
   }
 }
diff --git a/lib/src/render/rich_text/flowy_rich_text_keys.dart b/lib/src/render/rich_text/flowy_rich_text_keys.dart
index fd3787935..18e9b8100 100644
--- a/lib/src/render/rich_text/flowy_rich_text_keys.dart
+++ b/lib/src/render/rich_text/flowy_rich_text_keys.dart
@@ -7,4 +7,13 @@ class FlowyRichTextKeys {
   static String highlightColor = 'bg_color';
   static String code = 'code';
   static String href = 'href';
+
+  static List<String> supportSliced = [
+    bold,
+    italic,
+    underline,
+    strikethrough,
+    textColor,
+    highlightColor,
+  ];
 }