On an iPad Pro 2021 with iOS 15.2 the camera source sometimes freezes after certain actions. Using the “Face AR” source seems to trigger it, as does switching to another app and back again.
I’ve found the camera can be unfrozen by selecting it, bringing up the inspector and then toggling to the other camera and back again.
I’ll look into this issue. I’ve seen it sometimes, tho I have not found the root cause in the code yet.
Unfortunately the camera gets blocks when using the Face AR Float Node, as this node high jacks the camera feed.