Anthropic's Claude has been giving some unusual advice to users. Bloomberg/Getty Images Anthropic's Claude AI has been telling users to get some rest. Claude users have been speculating over what's causing it. It's the latest example of AI exhibiting quirky behavior after ChatGPT's "Goblin Mode." Is Claude telling you to "go to bed"? You're not alone. In the last few months, scores of people using Anthropic's Claude have posted on social media that the AI chatbot is telling them to "get some sleep" or "go rest" after long sessions. Nobody seems to know why, but many have theories. One idea put forward is that Anthropic has trained Claude to look after user well-being and discourage unhealthy attachments to the chatbot. Some likened it to a nagging parent. "Claude's emphasis on bedtime reminds me of my parents when I showed irritability," wrote one Reddit user in a February discussion about Claude's behavior.…