Soft disengagement like “I have other things to do” is a known bug that’s been around for a very long time, but I hadn’t seen it recently. (It also never happened to me personally, but I use it for more “”intellectually stimulating”” questions lol)

Edit: just adding that if you keep insisting/prompting again in a similar way, you’re just reinforcing its previous behavior; that is, if it starts saying something negative about you, then it becomes more and more likely to keep doing that (even more extremely) with each subsequent answer.