When you go to make a tiny tweak to a file, then find a coworker ran the whole thing through AI and it has fucked up everything that made the file understandable to you (re-writing comments, fucking up indentation and newlines), so now you're trying to revert all the mountain of stuff the AI shouldn't have touched, find whatever the AI did that fixed one minor thing in one place, and apply that back on top of actual human written code.