I have been switching my hue bulbs and sensors over to Matter and hit some issues which may be room lighting related.
Each time the scene is initiated one or more of the lights displays a different colour than specified, usually less saturated.
I can switch between using devices connected via Matter or CocHue. I cloned the original CocHue device room lighting scenes and just disable the routine and I get a hard fault.
I originally suspected something in Matter so I created a simple rule to change a given light 20 times between two colours with a switch off in between. Whilst this light had been affected when it was part of a room lighting scene it was not affected when run in this way.
It is the same issue and describes the ways that the lights drift after when I do a scene change.
I had originally thought it was something to do with Matter hence posting in the integration thread. After I did my test without room lighting in the equation I thought it may be a room lighting issue,
My sense of networking is that the flavor, Matter, Thread, Zigbee, Z-wave, WiFi, Bluetooth, Ethernet, just transport the data. How that data is processed happens after delivery and would be more of a device firmware / hubitat driver issue.