Sometime in the last year, iterm2 started adding ~00~ crap around stuff I paste. then some yellow 'alert' box at the top indicating I'm doing something wrong and do I want to keep doing it. makes 0 sense to me, and... annoying because it didn't do it for the first... 6-7+ years I used it. My behaviour didn't change, but iterm2 starts breaking.

No doubt there's some 100% logical explanation as to what changed such that my standard copy/paste is 'wrong' now, but... would have preferred they'd have kept the original behaviour.