Cannot copy/paste within a Local Time Signature
1) create at least 2 staves
2) create local time signature (ctrl-drag time signature to one staff). I used 12/8 while the rest of my score was in 4/4
3) Write some music on the staff with the local time signature
4) Copy/paste the music to another bar on the same staff
In the current build (2.02) MuseScore either crashes, or gets very confused (puts the notes in the wrong place and creates some blank - not even a "whole bar rest" - bars).
In the next build (2.03) this is hacked over with a Dialog Message("Please select the complete tuplet/tremolo and retry the command") when you try to copy.
The issue is that you cannot copy/paste within a Local Time Signature. The fix is to allow copy/pasting within a Local Time Signature.