Same issue here. CPU Temperature always locked to incorrect number. 7950X, ASUS X670E Hero, no Ryzen Master, HWiNFO reads all sensors fine.
Edit: I just noticed the CPU temperature reported by Nuvoton NCT6799D does update eventually, but the values are way off. Example: during stress test (200W CPU power) HWiNFO reported CPU at 95 degrees (which makes sense and I assume is accurate). Aida64 was showing 42-45 degrees the entire time.