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.