For me, a really annoying tick in Cursor is how it often says "Perfect!" after completing a task, especially if it completely fails to execute the prompt.
So I told Cursor, "please stop saying 'perfect' after executing a task, it's very annoying." Cursor replied something like, "Got it, I understand" and then I saw a pop-up saying it created a memory for this request.
Then immediately after the next task, it declares "Perfect!" (spoiler: it was not perfect.)