ARKit- Camera Passthrough does not function in ARDebugCheck Packages targeted for Shipping

Repro Rate 5/5

Confirmed to be a regression. Regression tested in //UE4/Release-4.27 at CL 18319896 and it did not occur.

This was tested on a prepackaged project for compat testing. Only a black screen is shown even after allowing the app to access the camera. I tested around it by also rotating between landscape and portrait but it still doesn't appear to display the camera in the screen. Further testing also show that this is a problem that appears only in a package built with Shipping configuration since a package built with development configuration appears to work.

Steps:

1. Have ARDebugCheck packaged with Shipping configuration for iOS.
2. Install the package on to your device.
3. Start the application and tap the 'Start AR' button.
   • If prompted, allow the app to access the camera.

Actual Result: Camera passthrough doesn't begin.

Expected Result: Camera passthrough begins.

iOS AR app shows black background rather than a camera overlay in production