I can confirm that the CLI-based Dom0 variant does also work for the 'fedora-32' as well as for the 'fedora-32-minimal' template.
But that should not come as a really surprise, after what I had reported earlier concerning the Qube Manager variant!
Since the original issue reported for the Qubes Update widget window still persists - It just happened again today on my system - the question is now:
Should I raise a bug report - or - is there something else I should check / do before?
With kind regards,
VR