Musescore has significant UX issues and things have been getting worse with each release. Instead of adding new complex functions that are already done better by others they should try to fix the basic things first.
The one that's almost a show-stopper to me and I realized it only recently: if you insert notes (between existing notes), it won't move the existing notes to the right, but it will instead create this "long" bar with more notes than your time signature.
Really
I recommended this software to someone, and my first words were: “This is a powerful program, but it has got a steep learning curve. It feels like it was designed and written by a programmer who also plays music”
The answer from this person two weeks later: “You were totally right. Very frustrating.”