I suppose theoretically this must have been behaviour change that crept in with the refactoring, that luckily had a good result and not a bad one. I get nervou

I suppose theoretically this must have been behaviour change that crept in with the refactoring, that luckily had a good result and not a bad one. I get nervous about things that accidentally work but I definitely relate to being so tired or under too much pressure to move on that I just trust in luck. That said, I would guess that even if the accidental behaviour change didn't occur, the bug would have been much easier to solve after the refactor made the intention of the code clearer.