[Bug] Ikea/Hue Remote: Failed to process MQTT message
**Describe the bug**
A clear and concise description of what the bug is.
![image](https://user-images.githubusercontent.com/44815197/98386511-44c80900-201e-11eb-8d9f-db0a17914164.png)

**To Reproduce**
Hue Dimmer Remote + IKEA Puck + IKEA On/Off Remotes paired via zigbee2mqtt. 
It is discovered:
![image](https://user-images.githubusercontent.com/44815197/98386663-76d96b00-201e-11eb-9e42-464bfc2a9ce7.png)
However on button presses it produces an error. 

I've tried switching MQTT version to 3,4,5 and get the same error. Is exposing Remotes currently working? I thought i read in #2 that it was supported in the release. 

Am running homebridge config UI.