did you try with a fresh chat session? i just tried and it works fine
I asked for jokes this morning and initially it made excuses and wouldn't give me jokes until I tweaked the prompt.
Later I refreshed the chat and pasted in the original prompt and got jokes right away, with no excuses.
(I was asking for jokes on the topic of the Elon Musk Twitter acquisition. My personal favorite: "With Elon Musk in charge, Twitter is sure to become the most innovative and futuristic social media platform around.")