On the latest ArchLinux AUR package (3.4.2.40983-2), this all started working again for me.
That update includes the workarounds mentioned in Crash when changing sync folders (Linux; with solution) and Crash changing sync directory (with fix).
Note: I wasn’t trying to change my sync folder. Maybe I did once a long time ago. At some point with an update, things just stopped working, or maybe it was when I upgraded to Gnome 40 and switched to Wayland.
So, with this update:
- No special flags are needed to load
- Sizing / scaling is all correct
- Mouse mapping is correct
- Tray icon is back
and everything works.
Thanks also to @mia who has been working with me by email for a long time on this too!