I have a related issue which is pretty easy to duplicate. In 4/4 (quantized to 16th notes), if you start from scratch and create a note in piano view that lasts exactly 1 measure + 1/16, is should appear in the score view as a whole note in the first measure followed by a 1/16 note in the second measure, with a tie between them. Instead, all you get is a whole note in the first measure and no note at all in the second measure. I can sort of correct this in score view, but further changes in piano view will make the 1/16th note and tie disappear the next time you switch views. No work-around I have tried will fix this. This bug existed prior to v5.2, by the way. I was hoping v5.2 would fix it, but the behavior did not change in any way. It may or may not matter that I also have Notion installed, I don't know.