I thought this might be a one-off issue but it’s happened now with multiple smart bulbs. Whenever I view the light entity in HA its brightness shows as 1%. If I update it to any value, then it will work but the display/value will go back to 1% almost immediately.
I’ve had this issue with a BW-LT21 connected via Tuya, once again when flashed via Tasmota, and again when flashed with ESPHome. Now I have it with two new Athom lights via ESPHome. The only light I never had this problem on was a bluetooth mesh light connected through Alexa.
I can confirm with the Athom lights at least that their state in the logs are showing as 100% brightness being sent back to HA. They are rgbct lights if it makes a difference.
My theory is that it’s reporting the brightness back as something HA can’t parse and changes it to 1, or HA is reading it from 0-1 instead. Is there anyway to fix this? I’d like for the reported brightness % in HA to be accurate.