ouch ouch, what a dramatic problem
Please don't do like Lord_Messi in 2021 who rotted all the messages of real problems crying in each message that he had to put RGB back with the camera for his start selfie
This was disabled with Android Firmware 11.86 and Asus replied that it would not be restored.
So live with it, root your rog 5 and do it yourself, downgrade your rog 5 with Android 11 and firmware older than .86 or throw it away but don't expect any action from ASUS.