I understand about the Z-wave network discovery, and that the temperature sensors will not operate as Z-wave relays because they are battery-operated and go into sleep mode.
Testing the PG9905 sensors is tedious because of having to wait for the sensors to wake up, take a reading, and detect a temperature difference. I don’t know what the sleep period is, but I have usually waited about 15 minutes.
While you are testing, look at the temperature data reported in the “more” s screen for the PowerG sensor test. It always seems to be correct.
I think the it is unlikely to be an ADC problem because, to my knowledge, the temperatures were being correctly displayed on the ADC app when the panel was at 4.0.1.