I don’t believe these gremlins have been reported.
1. In Amibench prefs I changed the default desktop size, not that it’s relevant but chose 150%, rebooted and on restart none of the desktop icons would open, double clicking or otherwise. Restored from backup and all works as it should.
2. I installed Skidmarks before the official update and it worked fine. After the update when you try to start Skidmarks it just hangs on a white screen. Unfortunately you cannot delete Skidmarks and start again, having said that what the necessity when it should just run.
Hope this feedback is helpful.
1. Why do that, simply change screenmode to 1280x720.
2. Check there is no savestate, set to "start from scratch". It does sit on a white screen for around 30 seconds. AROS use white / grey screen, while commodore roms use black screen while loading stuff.