Recently, the authors of Genshin Impact held a presentation of update 6.5. Several players had questions about the promo art.
There is an opinion that miHoYo (HoYoverse) used AI-based tools to create it:
Attentive users enlarged the image and noticed a strange thing with Paimon's hand — it looks like the heroine has grown a sixth finger on her hand.
Dissatisfied users called on miHoYo to use higher quality AI tools.