Suddenly the produced images are totally different than before

[smileBeda]

I was running the image generation just fine for a few hours and then suddenly, the generated images changed completely.

For reference, I used portrait photo of a asia old warrior chief, tribal panther make up, blue on red, side profile, looking away, serious eyes, 50mm portrait photography, hard rim lighting photography–beta as prompt. It always generated quite acceptable images that more or less fit the prompt (see https://mpost.io/best-100-stable-diffusion-prompts-the-most-beautiful-ai-text-to-image-prompts/ for a reference as of how they look like)

And then all of a sudden, I get this kind of stuff:

I did not alter the main class nor the stable_diffusion_engine.py file.

I even cleared the .cache folder

What is the cause of this sudden change? Nothing changed at all, the values are all the same as before.