Bug Stereoscopic video not working starting at Unity 2019.2 forward

In Unity 2019.1's when applying a material for stereoscopic video there is a 3D layout option. This allows you to select over and under for 3D stereo videos. In Unity 2019.2's and forward this option has been removed.

Can anyone else confirm this issue or have a fix for this issue?
Our projects can't move forward to newer Unity versions without this feature.

Thanks,
Sam

Details:
Following the below tutorials 2019.1's work, however using 2019.2's and forward do not.
Tutorial 1: https://learn.unity.com/tutorial/play-360-video-with-a-skybox-in-unity#5dd58153edbc2a00206e701d

Tutorial 2:

Sample Stereo Video:

2019.1's results: stereo and mono videos play as expected.
2019.2's and forward results: mono videos play, but stereo videos do not. All you get is either a black background or you see both the over and under at same time.

Unity versions tested that worked: 2019.1.9, 2019.1.12, 2019.1.14
Unity versions tested that failed: 2019.2.0, 2019.2.21, 2019.3.15, 2020.1.1

2019.1's material inspector panel image with 3D layout option:


2019.2's and forward material inspector panel image without 3D layout option:

 

I have the same problem. Documentation says it will appear when checking VR Enabling "Virtual Reality Supported" under player settings. However, this is the Legacy XR setting and I'm using the new XR Plugin management.
Is there not support for Sterescopic 3D 360 video with that combination?

 

I found a workaround. We can set the flag on the shader via code:

Code (CSharp):

1. material.SetFloat("_Layout", 2);

 

(None, 0, Side by Side, 1, Over Under, 2)

 

Still no real resolution for this issue, come on UNITY!