I've gotten my own answers given back to me for problems I forgot I already had.

Claude does it quite a bit when you’re triggering the search tool functions.

It’s fine, and what you would expect for certain prompts, except that the synthesized results often come back communicating more authority than they deserve.

I've gotten this too a lot. If you ask AI to cite where it got info you can lose a lot of confidence in it pretty quickly.

I have seen it quote my own code back at me, including comments word for word.