I do seem to be getting a bit of wonky behaviour with the 1 sided warp. Seems to start happening once I started apply the process to multiple pitches at the same time, though that could be wrong. I just noticed it after I had started working with multiple pitches. here is a video linked. You can also see sometimes undo has a different effect on wether the warp is undone, or just the extended note
https://www.dropbox.com/s/633m082980...notes.mov?dl=0