Screen Fade and Bloom Settings
To make it simple, if Bloom is disabled in Project Settings -> Rendering -> Default Postprocessing Settings, Matinee Camera Fade nor Start / Manual Screen Fade nodes work.
Tested in my project as well as a default Third Person Template project (Maximum Quality Settings)
Kind of important to fix since fade in / fade outs are important to VR transitions, and Bloom needs disabled.
After testing the project that was provided. I believe that this is a known issue (UE-29895) and that issue has been submitted to the developers for further consideration. I will provide updates with any pertinent information as it becomes available.
Note: I found that setting your engine scalability settings above medium for your post processing helped with this issue on our end.
Make it a great day
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