I'm having the same issue here. And one thing is that when the front camera disappeared in the camera app i noticed my rear camera can't really zoom in properly too. But once i clean cache, force stop and reboot it, it works normally like last time, ...
Honestly just don't get any rog phone at this point. I'm having a camera issue (cannot open front camera, missing macro mode, camera cannot focus clearly) rn and software updates did not fix it, nor other ways such as cleaning cache, storage, force s...
I read that and tried it too, except for replacing the ram modules and battery cuz my ram stick was soled in. As for the bios, i tried to open the bios menu on my laptop through f2/delete and power button but it didn't work also. Sigh