I have two issues so far.
1. I can not type anything in the YouTube login screen. The keyboard simply does nothing. I managed to login by cut and paste via long press context menu only.

2. Some of the settings are inaccessible. If I try to change the archive folder, I get an almost opaque overlay over the folder view and can't see or change a thing. The only thing I can do is press the back arrow.
Edit: By turning brightness to max I can just barely see the folder selection stuff through the opaqueness and managed to change the archive folder.

Also my archive is empty and copying the files to an unhidden dir didn't help. Neither new nor downloads from previous versions show up.
I managed to make my old downloads visible and playable. However new downloads are downloaded in some incompatible format. The download format is set to Normal/up to 360. Media Player won't play them either.
Archive issues sorted. Downloads working.

I don't use CSSU.