Here’s my list of problems with 6.0.3 on OS X
Activating the metronome causes glitching when recording audio or midi
Graphics bugs have returned, eg the playback head freezes
Cubase has frozen/crashed on me several times when switching apps and returning to cubase. Audio playback continues but the graphics don’t update and the software freezes.
Minor graphics corruption on the export window
I’ve gone back to 6.0.2 which seems to be much more stable.