ctrl-C not working on Firefox; ctrl-V just pastes back object in clipboard from another app
When I do ctrl-C, ctrl-V on a Mural object in Firefox it has just started pasting back whatever I had last copied in another app. (e.g. text from a word app appears in a post it)
i.e. it seems ctrl-C is not working on an object in my mural on Firefox. The ctrl-V part then just seems to pick up the last thing I copied in another app.
I have cleared cookies and sitedata for mural.co and cleared the cache. I have rebooted.
On chrome it works OK.
If I copy an Mural object in chrome and go over to Firefox and paste then the mural object pastes fine.
This seems to happen on all boards I have tried including a new one.
I have seen various threads about similar issues but no resolution (and I did not see this identical issue).
Firefox version 112.0.2
Windows 10 Pro