I submitted a ticket a week ago.
Status so far: They responded after two days and asked me to enable remote support.
Then the next day they told me the obvious, that the value did not update since the device didn't report a value to the Vera thermostat device. Then asked me to exclude, reset and re-include the device.
I responded that such action makes absolutely no sense, since the physical device in fact reports correctly to the Vera child device's
Temperature Sensor, it is just not displayed in the Vera main thermostat device. I don't believe both Vera devices (parent and child) is polling the thermostat for the current temperature, so that the main device don't receive this from the thermostat is not the problem. It has been silent since.
I don't want to exclude and re-include devices if it isn't absolutely necessary, they are parts of both scenes and mobile UI's that needs to be reconfigured every time.
Anyway, today I did exclude, power off, power on and re-include one of them, twice. Nothing changed, reported back to support.
Please submit tickets of your own with the same issue. Enable remote support, and send the line below "Tech support is enabled". Tell them the name and ID# of the device, and child device. And please tell them that exclude/include does not change anything, or that is the first thing they will make you waste time on.