Unity Post processing doesn't work in Single pass Stereo rendering

Unity 2018.2.0f

So I've tried almost every single Post processing image effect on the Asset Store (including Unity's official post processing stack).
Can't get a single one to work in Single pass Stereo rendering. 
Unity's post processing works on the right eye but the left eye is covered in a flat gray color. 

I see in various threads that people have mentioned and it has been flagged as "fixed". But it's far from that.

Has anyone had any success with Single pass Stereo rendering post processing? I'm at a loss here

Thanks