Müller Tint GU10 blub is missing light entity

[MahrWe]

I have a Müller Tint color GU10 bulb, which recently does not expose a light entity to home assistant.

I have updated an restarted the Zigebee2Mqtt and mosquitto add-ons. Both work well without anything in the logs for other devices.

I have reset, repaired and readded the bulb in hardware, z2m, and home assistant respectively.

The bulb in question can be fully controlled in the z2m frontend. Only in home assistant it appears as device with "powerOnBehaviour" but without light/switch capability.

Device details:
Zigbee-Modell
ZBT-ExtendedColor
Zigbee-Hersteller
MLI
Beschreibung
Tint LED bulb GU10/E14/E27 350/470/806 lumen, dimmable, color, opal white

All components involved seem to work well with other devices, that is why I am looking for device specific configuration in herdsman-converters.

[MahrWe]

I realised I can control the light using mqtt messages, so I believe the issue cannot be z2m. I will have a look at the mqtt integration in home assistant.