This is a follow-up issue so the initial fix can address the problem in MDL-77817 on all branches without being blocked by the lib upgrade (MDL-78251) on master.
This issue will implement a new option from the TinyMCE 6.6.0:
and all related with the implementation:
- Add patch to fix the bug on the menu if editor is in fullscreen mode
- Remove all changes in
MDL-76447 & MDL-77817, because the new option fix the same problems.