EDIT: I ended up upgrading to 2021.8 and my color picker issue resolved itself. Must have been an issue with 2021.7? Who knows.
I had a single Ikea Tradfri RGB bulb running fine for over a year. The color picker shows up, and allows different color selections - and I was even able to make a Node Red flow to randomize the color based on a button click from an Aqara button. It is in my daughters room, so I don’t really use it myself much. But it worked so well, I bought two more.
I just got around to installing them (one as a porch light, the other on a light post in my front yard) and they connect fine, and allow on/off/dimming via HA. But somewhere along the lines, the color picker stopped working…on ANY of the them, including the one that previously worked fine.
When a new color is selected, the GUI shows you selected that color, but the bulb does not change. After a few seconds, the GUI switches back to the “normal” color.
Here is a gif of the behavior:
The kicker is, I CAN set the color in the Phoscon web app.
Has something changed?