When opening an article, the editor does not load. The element where the text should be does appear, along with the toolbar, but any text that should be visible does nto show and you cannot click into the text area to edit. The on-off icon button does show above the top left of the toolbar, which will show the html correctly when toggled. The Editor and Code tabs which are usually to the right, above the editor and toolbar also do not show. The rest of the edit article page appears as normal.
In the inspector, the error message below appears:
tinymce.js?648b16676bb5f480ffd0d99f26bfb93f:1606 Uncaught TypeError: Cannot set properties of undefined (setting 'paddEmpty')
at Array.<anonymous> (tinymce.js?648b16676bb5f480ffd0d99f26bfb93f:1606:42)
at each (tinymce.js?648b16676bb5f480ffd0d99f26bfb93f:35:73)
at new tinymce.html.Schema (tinymce.js?648b16676bb5f480ffd0d99f26bfb93f:1605:17)
at tinymce.Editor.initContentBody (tinymce.js?648b16676bb5f480ffd0d99f26bfb93f:9445:51)
at tinymce.Editor.init (tinymce.js?648b16676bb5f480ffd0d99f26bfb93f:9435:97)
at tinymce.dom.ScriptLoader.<anonymous> (tinymce.js?648b16676bb5f480ffd0d99f26bfb93f:9373:42)
at Array.<anonymous> (tinymce.js?648b16676bb5f480ffd0d99f26bfb93f:7266:39)
at Object.each (tinymce.js?648b16676bb5f480ffd0d99f26bfb93f:35:73)
at loadScripts (tinymce.js?648b16676bb5f480ffd0d99f26bfb93f:7265:45)
at tinymce.js?648b16676bb5f480ffd0d99f26bfb93f:7263:29
This occurs on recent versions, definitely 2.9.92 and 2.9.93, over multiple Joomla sites, including 3.10.12 up to 5.x. Not all sites on these versions are affected.
The error shows tinymce, but I have confirmed that in global config, JCE is set as Default Editor. The error occurs whether or not the TinyMCE plugin is also available.
