Multi Camera Projection Doesn't show in View port

So I need Help,
When ever I have a Multi Cam Projection on to a single Texured Object feed into a Catcher node
It disappears from the view port. I know the GL render can't support, but I can switch on to Software Render and See the Muti Cam Texture rendered.

I know about Projection Prioritys and Blend settings
But why does it disappear in the 3D veiw port??

Nobody???

if you say the GL render doesnt support it you give your the answer already: the viewport is OpenGL based