Hi guys, i accidentally found a solution for fingerprint problem for my Asus Zenfone 8 Flip… i accidentally turned on "glove mode" and problems suddenly solved. You can find the settings from Settings -> Advanced -> Glove mode. Hope it can help 🙂
Thanks for the tip but unfortunately it didn't seem to make difference on my device. Sensor on this phone is pretty weird because it recognises one finger really well, but struggles with every other finger i add.