After correcting a note in Variaudio, next 3 seconds is flanged

Here’s an odd one. There’s one note of guitar (it’s a guitar solo) that has a few overly sharp humps in it (about 1 sec long if that), and after flattening it and closing sample editor, the next 3 to 4 seconds after the change now sound like they went through a flanger. I didn’t change anything in the time axis at all. This was on a duped tracked that was bounced to be standalone. Deleted the track, reduped, bounced, tried again, same. Weird.
Then I tried by splitting the solo immediately after the sharp note, but that didn’t help either. Buffer issue?