!! This seems to be a bug in the 4.22 Launcher Build of Epic Games. I build everything up from scratch with the Latest Oculus Branch Version and it works like a charm!
Use the Oculus Branch!
After a lot of testing it is actually the same problem as described here: https://forums.oculusvr.com/developer/discussion/70725/oculus-go-app-relaunch-freeze#latest Affecting the Unreal Engine 4.22 Launcher version. Hey all, im completely lost on this problem. My App opens up fine the first time trough UE4 Editor Launch, Installing the APK trough adp and even trough the Store Distribution! But when i close it and open it again audio plays fine but i have no rendering and the screen stays black. The only way to close the app is to press several times on the oculus home button. I have searched trough logcat the whole day and there is literaly nothing that happens when i click on the app the second time. Restart does not help. Only a reinstall works fine.
I can send the logcat to anyone willing to take a look. What else could help to identify the problem? If you are oculus staff i can also add you to the channel.