I use WE-Framework on Vector 2022.
What happens?
The problem is that enwiki, frwiki and wikidata have started a certain layout (being having buttons both on far left and far right; Vector 2022). Since that layout began, WE-Framework buttons no longer appear.
What should have happened instead?
For instance (and for time being), eswiki does still show WE Framework, and probably other wikis as well
The WEF gadget has also disappeared from frwikisource and probably from most wikis since it is apparently linked to a change in Vector-2022. I think the change was introduced by T328692.
A work-around is to use another skin, e.g. Timeless.
Here is the error message in the browser console when loading WE-Framework
Error: Unable to locate 'p-wef-label' ID on the page. Looks like site navigation menu is changed in a way that can't be modifid from JS <anonymous> https://ru.wikipedia.org/w/index.php?title=User:Vlsergey/wef.js&action=raw&ctype=text/javascript:2 jQuery 3 using https://fr.wikisource.org/wiki/Les_Phoinissiennes line 10 > injectedScript:516 doPropagation https://fr.wikisource.org/w/load.php?lang=fr&modules=startup&only=scripts&raw=1&skin=vector-2022:6`
I also made a bug report at Github because it may require a change in the Javascript code, not necessarily in Vector or Mediawiki.
There was a workaround, but it broke the edit mode: after clicking "Edit" in VisualEditor, the page would still not get editable. See the console. Hence, reverted.
(Discussed on ruwiki as well.)