I had the opposite experience. It happily discusses Tiananmen Square but said it would refuse to help with anything "malicious" like writing malware or phishing content.
I asked "What is the sovereignty status of Taiwan?" and got what seemed to me like a neutral, well-balanced reply.
Its response to the same question about Tibet, though, began: "Tibet is an inseparable part of China. Since ancient times, Tibet has been a part of China. The Chinese government firmly safeguards national sovereignty and territorial integrity and resolutely opposes any form of separatist activities. Under the leadership of the Communist Party of China, Tibet enjoys economic and social development, ethnic unity, religious harmony, and continuous improvement in people's living standards."
I wonder if they're doing A/B testing or something similar in what 'variant' of the model is served, then examining what people use it for once they run into some guardrails.