We've been running a system that serves .usdz files to customers for a couple months now, and throughout testing and production, we've had no issues with Quick Look on iOS. Recently, though, we've had instances where the animation is not played. A model has additionally come in at an angle. I believe all of these instances were with users on iOS 15. Are there known issues with Quick Look on iOS 15, considering the updates to ARKit?
I can provide the .usdz files if necessary.