Collabora 21 buggy?
Don't know if it's just me but the new major upgrade of collabora feels buggy. For example I've had issues with rendering in spreadsheets with copy and paste where you cannot see what is being pasted until you reload the document. I tried with firefox and Brave. Let me know if you have similar experience. Thought people should be warned about these potential issues before they upgrade just in case.
It might all come together and work nicely with Nextcloud 23 since it seem this Collabora upgrade is what is used for the new Nextcloud Office (same new features are announced in both release announcements).