Cant remove stale users, and their last-edited cells wont display

Reposting another user's issue as I am now experiencing the exact same thing. If a user disconnects improperly, it orphans their user and I cannot remove that user, and any cell they were editing becomes "locked" as in, I can edit the content but it wont display it.

How can I kick users (particularly guest users)? This is important not only for orphaned users but also for potential "griefers".

My personal setup is NC 23.0.0, Richdocuments 5.0.1, and richdocumentscode 21.11.6

https://help.nextcloud.com/t/stale-connections-to-collabora-documents/125628

I set up the built-in CODE server in my NC instance (version: 21.0.2). I noticed that if reload the page or jump to another URL while editing a spreadsheet concurrently with my colleagues and then come back to editing the document, my user is listed multiple times in the list of connected users (i.e. the icons near the share icon on top-right). This does not happen when closing the document with the x button and then coming back, so it looks somewhat like if I don’t exit “properly” then the next time I come in to edit the document the system see me as a new user, and my old connection to the document is still alive but stale.
Does this make sense (my phrasing for sure does not, but I hope you understood the issue)? Is this intended behavior a bug, or a misconfiguration of my instance?
Thanks in advance for any help you might provide.

Start by reproducing the stale-user behavior with the reported Nextcloud 23.0.0, Richdocuments 5.0.1, and richdocumentscode 21.11.6 setup, then trace how disconnected users and locked cells are handled. Done means stale or guest users can be removed and their edited cell content displays normally.