I am experiencing a bug in 4.20.2 (and since the launcher release of 4.20) where paper2D sprites will not render in VR correctly. They will only render in the left Eye. This has been an issue in previous engine versions but has worked correctly if using translucent materials.
In UE4.20 it doesn’t seem possible to render Paper2d flipbooks in VR with instanced stereo enabled. Only the left eye is rendered, even if using the opaque, masked or translucent material domains.
Is this a known issue? A search has come up empty. I have filed a bug report.