We were using 9.4 beta to see if it resolved the issue. It does not. We see the issue in XCode 9.3 (Release version) as well.
As far as I can see this issue exists when Auto Graphics API (or Metal) is selected in the player settings.
Building and running on an ARKIt capable device will give a black screen instead of the usual video background. It appears to behave normally when running in the Unity editor.
The following is our configuration :
- Unity 2018.1.0f2
- ARKit 1.5
- Vuforia 7.1.34
For completeness, a list of ARKit compatible devices is given below. I would expect to see the issue only on these devices running iOS 11.3+ with the "Auto graphics API" or Metal selected when the build is done in Unity.
I will also attach some screenshots showing a couple of the components and settings we are using in our project.
iPhone 8 Plus
iPhone 7 Plus
iPhone 6s Plus
iPad Pro (12.9-inch) Wi-Fi
iPad Pro (12.9-inch) Wi-Fi + Cellular
iPad Pro (9.7-inch) Wi-Fi
iPad Pro (9.7-inch) Wi-Fi + Cellular
iPad Pro 12.9-inch (2nd generation) Wi-Fi
iPad Pro 12.9-inch (2nd generation) Wi-Fi + Cellular
iPad Pro (10.5-inch) Wi-Fi
iPad Pro (10.5-inch) Wi-Fi + Cellular
iPad (5th generation) Wi-Fi
iPad (5th generation) Wi-Fi + Cellular