They updated Fan Xpert 4 today. But! They didn't fix this issue. I have another thing. Please don't ask me to run Fan Auto Tuning every time after update!
https://www.youtube.com/watch?v=uDPKVKBMQU8 shows how to use multiple sensors to make for better automatic cooling decisions.
you are lucky. tried the same twice, still not there.
even better, all LED settings of the creator are gone, even after I used the asus backup function...
Try to contact with support via form on ASUS website or email as I did.
They requested some diagnostic data, researched, and informed me about incoming update where in my case this bug should be fixed.
There no way their technical specialists can discover, fix, and inform you about what's wrong in your case without any logs or diagnostic data from you.
Stay connected with support, they did respectable job for me.
P.S. Maybe in your case the reason why GPU is not added in temp. sources list is completely different than in my situation.