Comment 9 for bug 1930398

Maybe your new examples have used the actual defaults (q35 and sata cdrom) and therefore the recent error messages are that way. But even assuming that still too much is somewhat odd here and I fail to recreate the issue :-/

Sorry, I really tried to get a hold on this issue but there must be more to your use case or your system setup (as by now we've identified quite a bunch of odd details compared to a standard 20.04 system behavior).

I was looking for similar report and found this
https://bugzilla.redhat.com/show_bug.cgi?id=1824722
It looks quite similar to what you see.

If it is that it would be an yet-to-be-solved upstream case.
Could you sort out by goign through the details there if that is really exactly the case you are facing?
And if you are maybe chime in there to revive the bug and driving it to a resolution.

P.S. the bug there is around guest resets which don't match your use-case AFAICS, but still it is similar enough to have a look