He insults Tusk and Giertych, praises Braun. What happened to Grok?

"Grok has broken off the chain", "Grok has gone crazy" – the users of the X platform belonging to Elon Musk follow. Indeed, a chatbot based on artificial intelligence offends Tusk and Giertych and positively writes about Braun or Hitler. What's up with Grok?