Tightening regulations on generation?

I feel like the detection of sensitive images has become stricter since around yesterday. Has the judgment become more severe due to an AI version update?
It might be partly because my favorite character is lightly dressed, but even the original image that I finally managed to generate has now been flagged as sensitive, and I can no longer generate it.
I was hoping to use this service for a long time, so I find this a bit disappointing.