@eskimo, would you be able to help with this? The issue still occurs on iOS 15.1 (19B74).

For anyone who comes across this later, my question was answered by an Apple engineer on the WWDC 2023 Slack: "Quick Look extensions are currently not available on visionOS. I recommend filing feedback with your example to https://feedbackassistant.apple.com/." I filed feedback as FB12290337.

@Graphics and Games Engineer I filed feedback as FB12474494.