Hi, thanks for the detail, when this happens, does:
- Pressing the Esc key fix it
- and/or clicking once more on any neutral area fix it?
- and/or hover the pointer over a top toolbar fix it?
Can you file a bug on Issues · CollaboraOnline/online · GitHub ? It might prompt for more information when logging the bug and you would have the detail. But I can have a do if you like, just let me know.