Single Switch to show as a Heater device results in blank HomeKit thermostat controls

[greenerycomplexity]

What issue do you have? Please be as thorough and explicit as possible.

I'm using a Meross single wifi plug to control a panel heater. I set it up to show as a Heater device, pulling in readings from a Govee temperature sensor, which is also visible in HomeKit. This results in an empty heater in HomeKit with no visible controls. However, I can still turn it on and off, and change the temperature using Siri.

Empty controls in HomeKit

Furthermore, it seems like the temperature reading from Govee isn't updated either, I'm currently using this plugin:
homebridge-plugin-govee, and while it updates perfectly as its own accessory (both in Homebridge and HomeKit), the Meross plugin doesn't seem to recognise it. The temperature reading from the heater device shown in Homekit stays locked at 19.5 degrees.

The temperature sensor device updates in Homebridge as usual

This is what my switch setup looks like

Details of your setup.

• Do you use (1) Homebridge UI-X (2) Homebridge CLI or (3) HOOBS?
  I'm using Homebridge UI-X

• Which version of Homebridge/HOOBS do you have?
  I'm on Homebridge v1.8.1 (HAP v0.12.0)

• Which platform do you run Homebridge/HOOBS on (e.g. Raspberry Pi/Windows/HOOBS Box)? Please also mention your version of Node.js/NPM if known.
  On a Mac Mini running MacOS 10.13
  Node.js v20.13.1

• Which version of this plugin (homebridge-meross) do you have? Has the issue started since upgrading from a previous version?
  Latest one, v10.4.0

• Which Meross devices do you have that are causing issues? Please include product models if applicable.
  The switch in question is Meross Smart Wi-Fi Plug with Energy Monitor, MSS310

Please paste any relevant logs below.

No error logs are seen whatsoever, as I turn the plug on and off, the log is still updating its status as usual.

I've also tried installing the homebridge-dummy-thermostat (https://github.com/davidborzek/homebridge-dummy-thermostat.git), and it works just fine, controls show up as normal, even though it doesn't do anything.