### **Environment**:

Your OpenProject Version: 11.1.1 / Enterprise on-premises

Operating System / Browser / OpenProject language: Browser: e.g. Firefox

### **Logs**

The logs did not show anything. Browser console:

Begin of the insertion```text
End of the insertion Begin of the deletion \---BEGIN--- 
End of the deletion Uncaught Error: Uncaught (in promise): Begin of the insertionCKEditorError: e.idEnd of the insertion Begin of the deletion CKEditorError: [e.id](http://e.id/)End of the deletion is Begin of the insertionundefined
End of the insertion Begin of the deletion undefined 
End of the deletion Read Begin of the insertionmore:
https://ckeditor.com/docs/ckeditor5/latest/framework/guides/support/error-codes.html#error-e.id
End of the insertion Begin of the deletion more: [https://ckeditor.com/docs/ckeditor5/latest/framework/guides/support/error-codes.html#error-e.id](https://ckeditor.com/docs/ckeditor5/latest/framework/guides/support/error-codes.html#error-e.id)End of the deletion is Begin of the insertionundefined
End of the insertion Begin of the deletion undefined 
End of the deletion view@https://OPENPROJECTFQDN/assets/frontend/core-vendor-ckeditor-ckeditor-js.2701c38f34b52cce85b0.js:1:874110 Begin of the insertion
attributeToElement/</</</<@https://OPENPROJECTFQDN/assets/frontend/core-vendor-ckeditor-ckeditor-js.2701c38f34b52cce85b0.js:1:380242
End of the insertion Begin of the deletion attributeToElement/&lt;/&lt;/&lt;/&lt;@https://OPENPROJECTFQDN/assets/frontend/core-vendor-ckeditor-ckeditor-js.2701c38f34b52cce85b0.js:1:380242End of the deletion fire@https://OPENPROJECTFQDN/assets/frontend/core-vendor-ckeditor-ckeditor-js.2701c38f34b52cce85b0.js:1:226568 Begin of the insertion
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_convertInsertWithAttributes@https://OPENPROJECTFQDN/assets/frontend/core-vendor-ckeditor-ckeditor-js.2701c38f34b52cce85b0.js:1:364204
End of the insertion Begin of the deletion \_testAndFire@https://OPENPROJECTFQDN/assets/frontend/core-vendor-ckeditor-ckeditor-js.2701c38f34b52cce85b0.js:1:363835 \_convertInsertWithAttributes@https://OPENPROJECTFQDN/assets/frontend/core-vendor-ckeditor-ckeditor-js.2701c38f34b52cce85b0.js:1:364204End of the deletion convertInsert@https://OPENPROJECTFQDN/assets/frontend/core-vendor-ckeditor-ckeditor-js.2701c38f34b52cce85b0.js:1:360591 Begin of the insertion
End of the insertion convertChanges@https://OPENPROJECTFQDN/assets/frontend/core-vendor-ckeditor-ckeditor-js.2701c38f34b52cce85b0.js:1:359928 Begin of the insertion
fa/</<@https://OPENPROJECTFQDN/assets/frontend/core-vendor-ckeditor-ckeditor-js.2701c38f34b52cce85b0.js:1:392351
End of the insertion Begin of the deletion fa/&lt;/&lt;@https://OPENPROJECTFQDN/assets/frontend/core-vendor-ckeditor-ckeditor-js.2701c38f34b52cce85b0.js:1:392351End of the deletion change@https://OPENPROJECTFQDN/assets/frontend/core-vendor-ckeditor-ckeditor-js.2701c38f34b52cce85b0.js:1:330834 Begin of the insertion
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End of the insertion Begin of the deletion fa/&lt;@https://OPENPROJECTFQDN/assets/frontend/core-vendor-ckeditor-ckeditor-js.2701c38f34b52cce85b0.js:1:392316End of the deletion fire@https://OPENPROJECTFQDN/assets/frontend/core-vendor-ckeditor-ckeditor-js.2701c38f34b52cce85b0.js:1:226568 Begin of the insertion
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_runPendingChanges@https://OPENPROJECTFQDN/assets/frontend/core-vendor-ckeditor-ckeditor-js.2701c38f34b52cce85b0.js:1:472231
End of the insertion Begin of the deletion \_handleChangeBlock@https://OPENPROJECTFQDN/assets/frontend/core-vendor-ckeditor-ckeditor-js.2701c38f34b52cce85b0.js:1:453167 \_runPendingChanges@https://OPENPROJECTFQDN/assets/frontend/core-vendor-ckeditor-ckeditor-js.2701c38f34b52cce85b0.js:1:472231End of the deletion enqueueChange@https://OPENPROJECTFQDN/assets/frontend/core-vendor-ckeditor-ckeditor-js.2701c38f34b52cce85b0.js:1:469238 Begin of the insertion
End of the insertion init@https://OPENPROJECTFQDN/assets/frontend/core-vendor-ckeditor-ckeditor-js.2701c38f34b52cce85b0.js:1:411698 Begin of the insertion
decorate/<@https://OPENPROJECTFQDN/assets/frontend/core-vendor-ckeditor-ckeditor-js.2701c38f34b52cce85b0.js:1:255575
End of the insertion Begin of the deletion decorate/&lt;@https://OPENPROJECTFQDN/assets/frontend/core-vendor-ckeditor-ckeditor-js.2701c38f34b52cce85b0.js:1:255575End of the deletion fire@https://OPENPROJECTFQDN/assets/frontend/core-vendor-ckeditor-ckeditor-js.2701c38f34b52cce85b0.js:1:226568 Begin of the insertion
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create/</<@https://OPENPROJECTFQDN/assets/frontend/core-vendor-ckeditor-ckeditor-js.2701c38f34b52cce85b0.js:1:512393
End of the insertion Begin of the deletion decorate/this\[e\]@https://OPENPROJECTFQDN/assets/frontend/core-vendor-ckeditor-ckeditor-js.2701c38f34b52cce85b0.js:1:255626 create/&lt;/&lt;@https://OPENPROJECTFQDN/assets/frontend/core-vendor-ckeditor-ckeditor-js.2701c38f34b52cce85b0.js:1:512393End of the deletion invoke@https://OPENPROJECTFQDN/assets/frontend/polyfills.d0b35e283d8dea4e51cf.js:1:6751 Begin of the insertion
End of the insertion onInvoke@https://OPENPROJECTFQDN/assets/frontend/vendor.4a7dfb7efff28bb69fe2.js:1:2010391 Begin of the insertion
End of the insertion invoke@https://OPENPROJECTFQDN/assets/frontend/polyfills.d0b35e283d8dea4e51cf.js:1:6691 Begin of the insertion
End of the insertion run@https://OPENPROJECTFQDN/assets/frontend/polyfills.d0b35e283d8dea4e51cf.js:1:2159 Begin of the insertion
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End of the insertion Begin of the deletion N/&lt;@https://OPENPROJECTFQDN/assets/frontend/polyfills.d0b35e283d8dea4e51cf.js:1:13190End of the deletion invokeTask@https://OPENPROJECTFQDN/assets/frontend/polyfills.d0b35e283d8dea4e51cf.js:1:7369 Begin of the insertion
End of the insertion onInvokeTask@https://OPENPROJECTFQDN/assets/frontend/vendor.4a7dfb7efff28bb69fe2.js:1:2010280 Begin of the insertion
End of the insertion invokeTask@https://OPENPROJECTFQDN/assets/frontend/polyfills.d0b35e283d8dea4e51cf.js:1:7290 Begin of the insertion
End of the insertion runTask@https://OPENPROJECTFQDN/assets/frontend/polyfills.d0b35e283d8dea4e51cf.js:1:2774 Begin of the insertion
End of the insertion m@https://OPENPROJECTFQDN/assets/frontend/polyfills.d0b35e283d8dea4e51cf.js:1:9389 Begin of the insertion
End of the insertion S@https://OPENPROJECTFQDN/assets/frontend/vendor.4a7dfb7efff28bb69fe2.js:1:718894 Begin of the insertion
v/<@https://OPENPROJECTFQDN/assets/frontend/vendor.4a7dfb7efff28bb69fe2.js:1:716974
End of the insertion Begin of the deletion v/&lt;@https://OPENPROJECTFQDN/assets/frontend/vendor.4a7dfb7efff28bb69fe2.js:1:716974End of the deletion p@https://OPENPROJECTFQDN/assets/frontend/vendor.4a7dfb7efff28bb69fe2.js:1:716778 Begin of the insertion
End of the insertion invoke@https://OPENPROJECTFQDN/assets/frontend/polyfills.d0b35e283d8dea4e51cf.js:1:6751 Begin of the insertion
End of the insertion runGuarded@https://OPENPROJECTFQDN/assets/frontend/polyfills.d0b35e283d8dea4e51cf.js:1:2282 Begin of the insertion
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End of the insertion Begin of the deletion wrap/&lt;@https://OPENPROJECTFQDN/assets/frontend/polyfills.d0b35e283d8dea4e51cf.js:1:2061 MutationCallback\*j/k\[e\]@https://OPENPROJECTFQDN/assets/frontend/polyfills.d0b35e283d8dea4e51cf.js:1:18282End of the deletion r@https://OPENPROJECTFQDN/assets/frontend/vendor.4a7dfb7efff28bb69fe2.js:1:717177 Begin of the insertion
End of the insertion E2g8@https://OPENPROJECTFQDN/assets/frontend/vendor.4a7dfb7efff28bb69fe2.js:1:722101 Begin of the insertion
End of the insertion r@https://OPENPROJECTFQDN/assets/frontend/runtime.deb698e61f75f2ad9366.js:1:561 Begin of the insertion
End of the insertion /ur0@https://OPENPROJECTFQDN/assets/frontend/vendor.4a7dfb7efff28bb69fe2.js:1:232023 Begin of the insertion
End of the insertion r@https://OPENPROJECTFQDN/assets/frontend/runtime.deb698e61f75f2ad9366.js:1:561 Begin of the insertion
End of the insertion GDA9@https://OPENPROJECTFQDN/assets/frontend/main.45ddc8e4d6246b4368ee.js:1:266410 Begin of the insertion
End of the insertion r@https://OPENPROJECTFQDN/assets/frontend/runtime.deb698e61f75f2ad9366.js:1:561 Begin of the insertion
End of the insertion zUnb@https://OPENPROJECTFQDN/assets/frontend/main.45ddc8e4d6246b4368ee.js:1:1305765 Begin of the insertion
End of the insertion r@https://OPENPROJECTFQDN/assets/frontend/runtime.deb698e61f75f2ad9366.js:1:561 Begin of the insertion
End of the insertion 0@https://OPENPROJECTFQDN/assets/frontend/main.45ddc8e4d6246b4368ee.js:1:16695 Begin of the insertion
End of the insertion r@https://OPENPROJECTFQDN/assets/frontend/runtime.deb698e61f75f2ad9366.js:1:561 Begin of the insertion
End of the insertion c@https://OPENPROJECTFQDN/assets/frontend/runtime.deb698e61f75f2ad9366.js:1:430 Begin of the insertion
End of the insertion d@https://OPENPROJECTFQDN/assets/frontend/runtime.deb698e61f75f2ad9366.js:1:293 Begin of the insertion
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End of the insertion Begin of the deletion @https://OPENPROJECTFQDN/assets/frontend/main.45ddc8e4d6246b4368ee.js:1:47 
End of the deletion Angular Begin of the insertion8
End of the insertion Begin of the deletion 8 
End of the deletion S Begin of the insertiones6-promise.js:408
End of the insertion Begin of the deletion es6-promise.js:408 
End of the deletion v Begin of the insertiones6-promise.js:176
End of the insertion Begin of the deletion es6-promise.js:176 
End of the deletion p Begin of the insertiones6-promise.js:126
End of the insertion Begin of the deletion es6-promise.js:126 
End of the deletion Angular Begin of the insertion4
End of the insertion Begin of the deletion 4 
End of the deletion r es6-promise.js:95 Begin of the insertion
End of the insertion Begin of the deletion
End of the deletion E2g8 es6-promise.js:10 Begin of the insertion
End of the insertion Begin of the deletion
End of the deletion Webpack 12 Begin of the insertion
zone-evergreen.js:798:38
End of the insertion Begin of the deletion
zone-evergreen.js:798:38 
End of the deletion Angular Begin of the insertion8
End of the insertion Begin of the deletion 8 
End of the deletion S Begin of the insertiones6-promise.js:408
End of the insertion Begin of the deletion es6-promise.js:408 
End of the deletion v Begin of the insertiones6-promise.js:176
End of the insertion Begin of the deletion es6-promise.js:176 
End of the deletion p Begin of the insertiones6-promise.js:126
End of the insertion Begin of the deletion es6-promise.js:126 
End of the deletion Angular Begin of the insertion4
End of the insertion Begin of the deletion 4 
End of the deletion r Begin of the insertiones6-promise.js:95
End of the insertion Begin of the deletion es6-promise.js:95 
End of the deletion E2g8 Begin of the insertiones6-promise.js:10
End of the insertion Begin of the deletion es6-promise.js:10 
End of the deletion Webpack Begin of the insertion12
```



End of the insertion Begin of the deletion 12 
\---END---

End of the deletion ### **Steps to reproduce:**

1. Go to some Wiki pages (unclear why some are affected and some are not)
2. Click on &quot;Edit&quot;

### **Actual Behavior**

The editor does not load properly, Wiki articles can&#39;t be changed

### **Expected Behavior**

Editor loads, Wiki can be edited