Pasting atop 'Measure repeat' doesn't paste rests
Steps to reproduce:
1) Place a 'Measure repeat' (% symbol)
2) Copy a different measure with notes and rests
3) Highlight the 'Measure repeat' and paste
Result) The notes will be pasted but the rests will not exist.
Also, erasing this broken measure will give an empty bar with no rests. The way to fix this is to place another 'Measure repeat' and then delete it, which will result in a bar with a whole rest.