MS 3 consuming 100% cpu (core) when idle after PRE activity (keeps Mac awake, too)

They may be expensive (too expensive if you ask me), but being 100 busy is what you buy any computer for, buying a computer that is 100 idle is pretty pointless, isn't it? You don't höre employees just to let them do nothing, do you?

Just kidding of course...

I'm curious if this is related to the PRE. I just opened it on my Windows 10 system and CPU jumped from near 0 to around 30%. It stayed there after I closed the PRE. It stayed there for a good 10 minutes before I close MuseScore and reopened it to a CPU usage near 0 again. I seem to remember a problem with this before 2.3.2 was released and it was fixed. IDK, perhaps it wasn't fixed in the master at that time.

Edit: I found the issue #265183: Changing note pitch via Piano Roll editor causes mscore to eat %100 of a cpu. I was merged with master, but the issue is a little different. My CPU usage actually didn't spike until I change the On time, which was the only edit I made.