XFCE and PROUD Thunar user
Do you use nautilus ?
This the second update in a row now where the big update installed dolphin which I don’t use simply because I use a few gnome packages.
Checking the log a message popped up about conflicting FileManager1 instances in /usr/share/dbus-1/services.
I had to remove org.freedesktop.FileManager1.service
as it conflicts with org.xfce.Thunar.FileManager1.service
So find the FileManager1 service you DONT use and rename or delete it.
Yes rebuild python 3.12->3.13 AFTER the update,
Mine listed over 160 packages but after the 1.6Gb update running the check again the big update had reinstalled all but 6 to python3.13 
Only problem, one of them was powerline bash font (powerline-shell) so my terminal was nuked.
EASY FIX - in pamac-gui find powerline-shell, verify files are currently in python3.12 and then uninstall. Reinstalling puts them in 3.13.
I was then able to successfully install the 5 remaining packages.
Not seen the screen blanking activity — yet
And no problems so far with kernel 6.13