Hi! Im using vuforia to make an AR app and it was working fine for a long time during development. Recently, ive encountered this bug where when the app starts fresh, i can open the AR scene and its work great, but when i go back to the menu and select another AR scene the screen is black. But here's the weird thing, it still detects ground planes and renders my game objects when interacted with.... Any ideas on a fix for this? thanks in advance!