We just updated to Unity 3.5.2 and within out project we have multiple cameras, orthographic for UI and perspective. We’ve always had no issue with this as the UI would show up normally on the orthographic camera, but since the update the orthographic camera does not render the UI in the Game View Window in the Unity Editor.
This is a MAJOR issue for production as we no longer have the UI showing up.
The UI shows up on the iPad when we build to it and the UI shows up in the Camera Preview, but it does not show up in the Game View which makes it almost impossible to debug.
When looking at the multiple cameras, we played around with our depth values and we found if we had the perspective UI camera depth value lower than the orthographic UI camera depth value all of sudden the UI would show up again in the Game View Window.
The problem with this is we need 3D rendered UI with perspective on top of orthographic UI. So until this issue is fixed our production is going to be disrupted. It only seems to happen in the editor. I hope someone at Unity can fix that, as it was never an issue before now.