Sonoff TRV valve opening & closing degree entities - ZHA

[obtuse bough]

I've just added a Sonoff TRVZB to my ZHA install.
I can enable the valve_opening_degree and valve_closing_degree entities but I get an error when trying to modify them:

Failed to perform the action number/set_value. Failed to write attribute valve_closing_degree=43: <Status.UNSUPPORTED_ATTRIBUTE: 134>

I'm on 2024.12.2 and I believe that includes the latest zha-device-handlers with the quirk mentioned here:
https://github.com/zigpy/zha-device-handlers/pull/3358

Is anyone else setting this?

[obtuse bough]

I think I need to update the TRVZB firmware

[potent thicket]

I use z2m and it works fine. Probably worth updating the firmware in the TRVZB if it's not latest and seeing if it's a problem with that or the zha implementation though