Hi,
This is a new and weird one. I'm using latest daily (6th Dec 2021), Max 2021.2, Windows 10.
The video screen capture should be self explanatory - I move an object and it disappears from the IR. I'm not sure if it's always happening (probably not, but I can't not make it happen unless I do a max restart).
Not shown in the video: An 'undo' makes it reappear, and restarting the IR makes all the objects come back. Also, it's not happening to all objects. I tested moving a car proxy and it didn't disappear... very odd.
The only third-party culprit I can think of that might be to blame here is FP.
Tough I do suspect this is a Corona issue. I'm using the CoronaSlicerMaterial in this scene (for the first time in a real-project scene), so maybe that has something to do with it?
Good luck and thanks for any tips!