FaceTime Reactions no longer working in FaceTime (Also, Studio Light and Portrait adjustments) on macOS Sequoia 15.2 and LG Ultrafine monitor

[armhol]

I have been using Reactions and also, Studio Light and Portrait adjustments for FaceTime calls on my Mac using the camera in my LG Ultrafine monitor. This worked fine, but sometime in the past month it has stopped working. The camera is working fine, just the sliders do nothing, and clicking the reactions does nothing either even though they are all set to be active!
I have tried using my iPhone 16 as a camera using continuity camera and this functions as expected with all the adjustments and reactions working just fine, so it's not an issue with the OS.

Did a recent update break something with the LG Ultrafine webcam? Did Apple stop supporting the LG Ultrafine for these functions?

MacStudio M1 Max, 64GB ram, Sequoia 15.2.

Thanks in advance for any help!

 

[armhol]

OK, nobody responded to this post, so I decided to investigate further and hook up the monitor to my new Mac mini M4 Pro. Hey presto it all worked as expected, so the issue was defy with the Mac Studio. Deleting caches and preferences didn’t work. Today I reinstalled Sequoia over the top of the old installation and the issue is sorted. Something in the system must have got corrupted. Anyway, issue sorted and the info is here for anybody else who may get the same issue.