Hello all,
Recently the driver for Zigbee Switch was pushed to my home hub and all my Sylvania / Levance / Osram RGB lighting devices have lost all functionality, they can only be turned on and off, but no color picker or dimming options appear. I removed and re-added one of the devices, and the updated color picker etc appeared, but within hours went back to reduced functionality in the app.
I can only think of removing all the aforementioned devices - clearing all remnants of the broken instantiations and hoping it holds without reverting. My hesitation to do this is given by the amount of devices I would have to troubleshoot - might as well start from scratch on another platform.