I set up a Mirror Me for my kitchen. I set it up for my kitchen light, a Lutron Caseta dimmer, to forward commands to my under cabinet lights, a set of Osram/Sylvania RGBW zigbee string lights.
The string lights are using the Generic Zigbee RGBW Light driver, and have been functioning flawlessly otherwise.
When I first installed the app, the RGBW lights followed all the commands I sent to the Caseta, but then the dimmer setting stopped updating. On/Off still works, but changing the Caseta dimmer does nothing to the RGBW. I can still change the dimmer in the RGBW device fine--it just doesn't mirror.