No Code Attached Yet bug
avatar ahotzler
ahotzler
27 Nov 2025

Steps to reproduce the issue

  1. Install Joomla!6.0.1 / or upgrade an 5x installation to 6.x
  2. dont touch or configre anything - just use default configuration
  3. login into backend
  4. Create/edit an article

Expected result

  • TinyMCE should load editor.css or editor.min.css from default template (as described in TinyMCE-Plugin settings and as was also the case in Joomla!5)

Actual result

  • TinyMCE doesnt load editor.css or editor.min.css
  • Neither from the template supplied nor from additionally installed templates.
  • Specifying a path to the CSS file in the plugin settings does not help either.

System information (as much as possible)

  • J!6.0.1
  • tried PHP8.4, 8.5 but loading the file should be done via javascript

Additional comments

The problem does not occur in the front end. I encounter the problem with Joomla! 6 new installations and with installations that have been updated from version 5 to 6.

No errors in browser console

No problem in frontend

"Template CSS Classes" enabled in TinyMCE-Plugin Settings

avatar ahotzler ahotzler - open - 27 Nov 2025
avatar joomla-cms-bot joomla-cms-bot - change - 27 Nov 2025
Labels Added: No Code Attached Yet
avatar joomla-cms-bot joomla-cms-bot - labeled - 27 Nov 2025
avatar ahotzler ahotzler - change - 27 Nov 2025
The description was changed
avatar ahotzler ahotzler - edited - 27 Nov 2025
avatar ahotzler ahotzler - change - 27 Nov 2025
The description was changed
avatar ahotzler ahotzler - edited - 27 Nov 2025
avatar ahotzler ahotzler - change - 27 Nov 2025
The description was changed
avatar ahotzler ahotzler - edited - 27 Nov 2025
avatar ahotzler ahotzler - change - 27 Nov 2025
The description was changed
avatar ahotzler ahotzler - edited - 27 Nov 2025
avatar ahotzler ahotzler - change - 27 Nov 2025
The description was changed
avatar ahotzler ahotzler - edited - 27 Nov 2025
avatar ahotzler ahotzler - change - 27 Nov 2025
The description was changed
avatar ahotzler ahotzler - edited - 27 Nov 2025
avatar brianteeman
brianteeman - comment - 27 Nov 2025

Confirmed

avatar brianteeman
brianteeman - comment - 27 Nov 2025

The easy way to see this error is to add a readmore link in an article.

IF the editor.css was being loaded then that would be displayed as a dotted red line inside tinymce. But as it is not being loaded the readmore line is just displayed as a solid grey line

avatar ahotzler
ahotzler - comment - 27 Nov 2025

Exactly, that's what I noticed too.

avatar brianteeman
brianteeman - comment - 28 Nov 2025

annoyingly this error is not present when you install joomla manually including composer install and npm install which is why no one noticed it before

avatar ahotzler
ahotzler - comment - 28 Nov 2025

Thats crazy @brianteeman. Do you have the option of doing a diff or something similar of the installations of both variants?

avatar brianteeman
brianteeman - comment - 28 Nov 2025

I just did that and I dont see anything useful

avatar Nor486
Nor486 - comment - 28 Nov 2025

I just updated Joomla! to 6.0.1 and TinyMCE seems to work fine with Edge, but not with Chrome, even after clearing browser data. But in Chrome incognito window, the editor works! Strange...

Edit: Tested backend.

avatar ahotzler
ahotzler - comment - 28 Nov 2025

I just tested this: My various test pages in Chrome, Edge, Edge incognito, Firefox: In no case was editor.css loaded.
All tests in the backend

avatar chmst
chmst - comment - 28 Nov 2025

Confirmed. Works on sites with 5.4.1 but not with 6.0.

avatar chmst chmst - change - 28 Nov 2025
Labels Added: bug
avatar chmst chmst - labeled - 28 Nov 2025
avatar MacJoom
MacJoom - comment - 30 Nov 2025

Confirmed on an update from 6.0.0 to 6.0.1 (worked on 6.0.0)

avatar ahotzler
ahotzler - comment - 30 Nov 2025

Does anyone have a 6.0.0 and a 6.0.1 to verify that it works in 6.0.0? If so, we would need to examine the difference between 6.0.0 and 6.0.1 in this regard.

As I am currently traveling, I am unable to perform the comparison at this time.

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