Musescore does have a weird playback quirk with melodic lines that I dislike where it doesn't let go of previous notes in a melodic line properly unless it's explicitly staccato. When making sounds for my game in it, I had to separate the same conceptual instrument to two different ones and alternate the notes so they wouldn't bleed/ring. Otherwise, the final result had a weird piano pedal effect.
Having to adhere to the limitations of the program is frustrating for sure. I have yet to find a non-classical notation software that I've been able to stick with though, unfortunately. It's not super high on the priority list right now anyways.