Beaming is all screwed up in new version.
Just downloaded new version. Beaming is totally bizarre when cutting and pasting. Beams keep wanting to connect across measure barlines, and when I use beam properties to correct the first note in a new measure, Musescore removes all beams from all eighth (or 16th) notes in that measure. I finally corrected it, but frankly couldn't recreate the correction, because I basically stumbled across it while trying all sorts of beaming property combinations.
Musescore never behaved like this before. That, combined with the inability to easily deselect groups of notes (apparently it's a feature to force me to use the key to do this now) makes me wonder what the programmers were drinking while working on this new version.