[xubuntu-users] 22.04 theme inconsistencies

[MR ZenWiz]

I just upgraded from 21.10 to 22.04 and I've noticed a few inconsistencies.

xflock4 does not work at all. This is annoying but xscreensaver gets around it.

I like to run with a dark theme - greybird-dark in this case. However,
where the document scanner (simple-scanner) went dark in 21.10 as
expected, the one in 22.04 (versions 42.0) refuses to do the same. It
always shows a light gray background in the app and on the title bars
instead of following the general theme.

How do I change that?

Thanks.

Mark