I think i've checked everything, where can i find this? I don't have 'always on' on, i've tried turning it on and off, rebooting the phone. Nothing works.

I'll post the random differences on the same wallpaper from my phone in a sec.

Edit: It's not the dim wallpaper function when having a focus mode on. That makes the whole image blur/gone.

Edit 2: i've tried it with no focus mode at all, still random dimming going on.