> It told me something to the effect of “This is the third time I’ve told you not to use that word, I’m ending this conversation now.”

That sounds absolutely bananas and would be reason for me to drop the service yesterday. For curiosities sake, what was the word and if I may ask (unless it's confidential or whatever), could you share the session itself? On the surface it sounds like a bug, as I'm regularly using kind of "vulgar" language (and some projects I work on with agents are NSFW) and never had anything like this happen, even with Claude, although I mostly do use ChatGPT/Codex on a day-to-day basis.