For this case Moin recently flagged to me an issue on meta where the title was translated but the body skipped because the body was too large.
There should be a post limit site setting but I doubt that’s the reason for this issue - it would’ve failed to translate to every language, not just one or two sporadically.
Another thing you can check is your LLM context window in your LLM setting.
By the way, I do not recommend GPT mini at all for translations. Many customers have given feedback that it does a very poor job, and in our early testing it also proved as such.