TRVs Holding open

Noticed a few of my Tado X TRVs are heating when not asking for heat (but heating loop is on to serve another radiator)

If I understand the valve correctly, when closed the pin is depressed. Hence I could understand a sticky valve preventing the radiator from heating but not closing.

Seperately I also get occasional notifications that TRVs (different one) need remounting.

Overall the system works but I wonder if there is a state where if there is a comms problem the unit gets into a screwy state regarding its setup and then although it winds up connected again it's already triggered a bug.

Anyone else seen this?

(also raised with TADO but nothing back yet)