Unity 5 UI & Planes Interfering

Hi All,

I have a project the is setup for VR but something strange is happening. My planes appear to be interfering with my UI :
2266971--151814--capture.png

The tree leaves and water are billboards on planes that are quite far behind the canvas. This issue happens with all planes not just the ones from this asset pack. I have also tried with a normal main camera, same thing. I have fooled around with the layers and sorting layers to no avail.

This issue happens in the editor and in standalone builds.

The canvas is in world space with panels that animate in and out depending on user selection.

Does anyone have any ideas?

Thanks!
Colton

my guess is it is something to do with the shader being used for the billboards. Its likely the shader queue thats screwing it up.