Hello Drixil,
Here are the steps I implemented to recreate your issue.
I am working in 4.8.3
1.) Create a test project with the minimal default level.
2.) Played in VR Preview mode
3.) Observed no issue with the transferring of the preview to the occulus head set.
4.) Exited preview
5.) Saved Scene
6.) Closed Project
7.) Opened Project again
8.) Played in VR preview mode again
9.) Again observed no issue.
Troubleshooting for the occulus :
As a disclaimer I have had many issues with the occulus running smoothly as well.
My occulus runtime will crash periodically if it sits for long periods of time without being used.
1.) Make sure you have the latest runtime installed on your machine.
2.) Unplug your oculus and plug it back in. ( Not really sure why this works but hey it’s worked for me.)
3.) Uninstall you oculus runtime and reinstall it. ( This will also require you to restart your machine a couple of times so you may want to hold off on restarting your machine until this step.)
As occulus is still in it’s early experimental steps the device and it’s software still has many bugs that are being discovered.
Not a fault by epic.
Here is a link to the oculus development page which has volumes of information. Everything from troubleshooting to compatibility and licenses.
Here is also a link to the oculus best practices guide.
I was not able to recreate your issue however I had to troubleshoot the oculus device before being able to see a picture at all.
Again not a fault by epic.
I recommend going through these steps and looking through some of this documentation to see if in fact the problem lies with the oculus device that you are using.
Thanks,