Philips hue bridge is upgrade with matter.
Now, the hue bridge is connected with ha through matter. I have only one lamp on the bridge. The lamp is only a few meter from the bridge, so the connection between bridge and lamp is perfect. But, in the logging in ha, the lamp is constantly becoming unavailable and then available again. It’s like the matter integration is polling the bridge, but before it does, sets the entity to unavailable, and after the polling ìt makes it available again.
Don’t know how it actually works in reality, but certainly something is wrong
Also, in the lamp had no color_temp_kelvin, only color_temp. Some time ago, kelvin would become standard.
Strange that an integration has apparently it’s own routine to create a device+entities.