While writing stories of any length (lower context, higher) I have experienced Gemini 2.5 stopping writing the message consistently for a couple weeks now. I have tried different prompts, to no avail. I also tried asking directly to it what prompt is doing it (the chat text at the top), but nothing. Is it safety? Are there settings I should change? "Trim incomplete sentences" is off, and I have zero custom stopping strings or regex.