Why does UTAU-Synth crash when I use end breathes?

[Tozzy]

Every single time I try adding end breathes my self on a ust it crashes but if it’s already there when I load the ust it doesn’t crash. It’s really frustrating and I’d like some help on this ;-;

 

[Kiyoteru]

You might see small rectangles in the area just above the piano roll. Right click on those and delete them. These are artifacts of the rest notes present in the original windows-version UST file.