From 8c0916a7bdb638bef61bea0bdf16c25ba1dbf1e4 Mon Sep 17 00:00:00 2001
From: Oleg Vdovenko <oleg.olhapi@gmail.com>
Date: Tue, 23 Jan 2024 21:45:21 +0200
Subject: [PATCH 1/2] [FIX] wrong context passed in collection.create

---
 backbone.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/backbone.js b/backbone.js
index c364267a1..4fdad1968 100644
--- a/backbone.js
+++ b/backbone.js
@@ -1085,7 +1085,7 @@
       var success = options.success;
       options.success = function(m, resp, callbackOpts) {
         if (wait) {
-          m.off('error', this._forwardPristineError, this);
+          m.off('error', collection._forwardPristineError, collection);
           collection.add(m, callbackOpts);
         }
         if (success) success.call(callbackOpts.context, m, resp, callbackOpts);

From d981caa7bc7ab93fb97f780db5b6ddf88dee5f9e Mon Sep 17 00:00:00 2001
From: Julian Gonggrijp <dev@juliangonggrijp.com>
Date: Tue, 23 Jan 2024 21:28:05 +0100
Subject: [PATCH 2/2] Add regression test for #4284

---
 test/collection.js | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/test/collection.js b/test/collection.js
index adf16dfe9..4ceeaa6ac 100644
--- a/test/collection.js
+++ b/test/collection.js
@@ -674,6 +674,16 @@
     this.ajaxSettings.success();
   });
 
+  QUnit.test('successful create with wait:true drops special error listener (#4284)', function(assert) {
+    assert.expect(1);
+    var collection = new Backbone.Collection;
+    collection.url = '/test';
+    collection.on('error', function() { assert.ok(true); });
+    var model = collection.create({id: '1'}, {wait: true});
+    this.ajaxSettings.success();
+    model.trigger('error');
+  });
+
   QUnit.test('failing create pre-existing with wait:true triggers once (#4262)', function(assert) {
     assert.expect(1);
     var model = new Backbone.Model;