Mouse Input problem with hidden empty staves (in my case a piano score)
Basically, when you create a 3rd stave in a piano score as per a certain piece's demand for it, even if you select hide empty staves in the style options, once the 3rd staff has served its purpose, if you try to input a note into say the 1st or 2nd staffs after the 3 staff section, Musescore will input that note into the hidden 3rd staff that no longer has any use instead of putting it into the first or second staffs.
If you don't get what I mean, then I can give the steps to reproduce the issue:
1. Create a basic piano score.
2. Add a 3rd unlinked staff by going Edit - Instruments.
3. Hide it by going to Style - General - Hide Empty Staves.
4. Try and input a note into the first or second staves and you'll see that it inputs it into the 3rd stave instead of the first or second ones.
I'm using Musescore 2.1 on a Windows 10 Computer