RBoy
(www.rboyapps.com - Making SmartThings Easy!)
6
These thermostats are susceptive to an issue where it can lose directional connection with the hub or have loss of packets. What you’re seeing is that the update from the thermostat didn’t reach the hub.
The “Soft Reset” option as described in the first post here. You may also want to use the C-Wire option while pairing so it works in active repeater mode which reduces loss of packets.