Had a major issue with the mouse on the previous version. If you run two vms and any of them are in fullscreen the mouse will never capture in the other one thereby not allowing scrolling or anything to work. I submitted a bug, they said it would be fixed in the next update, but it didn't get fixed? Next next version then?
I'm on Parallels 8.0.18483 This was a bug that was submitted and listed and they said it would be fixed in the next version. Didn't fix.