I am sorry to report that the zero rpm of the case fans remain in my asus x370 pro after this latest bios update. I updated using the asus windows bios update utility. I must also point out: I am using Aida 64 and hd sentinel for sensor watching and when I disconnected the case 2 fan and connected it to pump, the bug changed: instead of stopping, the fans and temp indication stuck. They remained stuck even after I run stress cpu test in cpuz... 37 degrees celsius and 1.2 rpm for the cpu fan with 100% use of my ryzen 7 1.7x... It only came around after reboot, naturally...
UPDATE:
Also tested HWINFO. The same thing happens, for some reason, cpu temp and cpu rpm remain stuck in a low value, after the screen turns off (power scheme) and comes up again. The latest hwinfo beta simply does not show temperature and rpm for my ASUS prime 730x pro.