Sprites/Flipbooks only render in left eye with Instanced Stereo Rendering enabled

Paper2D sprites render only in left eye with Instanced Stereo enabled.

Also confirmed in Main CL 4329255

Sample Project with all variants of Paper2DSprite Parent Material attached.

1. Add Sprite or Flipbook to level
2. Enable Instanced Stereo
3. PIE

Result: 4.19 All sprite materials except for TranlucentSpriteMaterials render only in left eye 4.20: All sprite materials render only in left eye