Kevin, this is helpful information. Just to make sure I'm reading you correctly, it's a valid approach to "copy" the file into your sandboxed app directory (e.g. the app's documents folder) to Quick Look, and then remove it once you're done with Quick Look? Not to hijack this thread, but I am facing a similar security scoping issue on visionOS trying to set up a PreviewApplication on a file URL outside the sandbox.

FB18377161 (Apple Vision Pro Developer Strap: Video Out and Recording Time Limit) Thank you!