@elextr: You were right, it does fix the context menus. I have created PR #3011 for this.
Unfortunatelly, it does not fix the autocomplete popups :frowning_face: I tried to find where the completion box is displayed and found [`show_autocomplete`](https://github.com/geany/geany/blob/a0333989f72e17cc221c41dbec7c16d50549b023... I understand it correctly, that part is handled by scintilla, right? Do you have any idea where to look in there, or should I just file a new bug in upstream?