I have had multiple experiences with exactly those symptoms for sensitive topics. Heard the word "sodomy" in a podcast, not being an English speaking native, didn't know what it is and asked the ChatGPT-4 Voice to define it. It just changed topics, explaining solitude or servitude instead. Tried text instead of voice and got error messages. Finally after getting an error with policy rules around sensitive topic is where it finally clicked as to the type of word it is. Looked it up in a dictionary.

Those symptoms seem to be common. Another one I have had often is this "reset" you mentioned. One of the most frustrating things is it forgetting our conversation up to that point.