Installed CSSU yesterday (for the first time) and noted few things:
1. Change theme and it will never change wallpaper and icons even after killall hildon-desktop
2. There is a line near top in the menu while in portrait mode
3. While inside any folder of menu, if we rotate device then we come out of the folder to main menu containing folders (have catorise installed)
4. While screen is locked, first power button press is ALWAYS ignored while before CSSU (before yesterday), power button used to get ignored only sometimes.
5. Lock screen is screwed in some theme and works fine in others.

I am not sure which of above bugs have been mentioned already but just writing those I have encountered.