Week 46 update is OK as far as I can see now (updated yesterday), except one thing changed:
System Settings → Users → Automatic Login seems to have no effect anymore. If it's set to 'On' I'm still asked for my pw after booting (which is inconvenient because I run the machine via Barrier, it doesn't have it's own keyboard).
I found a topic from 2019: https://discuss.getsol.us/d/1979-automatic-login-stopped-working-after-solus-updates, followed the advice in it, et voilá: Automatic Login works again.
Can this be related to the reworked PAM stack?
Besides this: Many many thanks to the team for maintaining this wonderful OS at such high level. Things always just work, and if not in some rare case, there always is a solution. Thats quite an accomplishment!