Tremolo not respecting ties
Maybe this is intended functionality or a quirk that can't be fixed, but when I put a tremolo symbol on a note with a tie, MS sounds both notes as if the tie wasn't there. Doesn't matter if I put the tremolo on the first note, the second note or both notes of the tie. There is a workaround: when you want a tremolo on the tie - just don't use a tie. Instead, adjust the length of the first note to the length of the tie. But I can see cases where doing the workaround would be clunky, non-traditional notation.
BTW: What is proper notation etiquette - tremolo on both notes, the first note or the second note.