So installed Thunderbird which I’ve used for 8 years.
This is a VM with all updates, my home system is Manjaro and I have Fedora VM that I use as well/
Only on Leap does Thunderbird complain about newer version and I have to create a new profile.
At the terminal starting with thunderbird -p which brings up the profile manager and I can choose my original profile.
The results are:
Manjaro - Never had to anything
Fedora - After the terminal thing it worked fine
Opensuse - Despite the terminal thing always wants to create a new profile.
All new versions of thunderbird.