GPT-5.2 fails to call tools properly

We are observing the same issue with gpt-5.2, in particular gpt-5.2-chat-latest. It seems to fail to parse harmony response format and returning it as an unparsed text [some text] <commentary to=functions.end_conversation 彩神争霸如何 不中反json 全民彩票json="{}" 天天中彩票appjson>