What are some of the UX problems you're thinking of? Personally I've been pretty happy with it so far. (My main point of comparison is Sibelius, which I used until I went all-Linux three or four years ago.)
Oh there are some. Some of them have been fixed in MS3
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.
There are so many weird things like that, but the one that infuriates me the most is the inability to move notes left and right. The answer is to cut and paste, which - if you have already written out multiple bars but realize one note is in the wrong place or you’re a quarter note off - becomes an exercise in frustration.
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.”
Scoring directly in the software is a huge pain + buggy midi support often forces me to use a different software and then import the midi into musescore for printing.
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