Is there any way to stop Post Process effects killing the Main Camera?

We have a strange situation that we need to get resolved and so any help is greatly appreciated...

• Run the build in Windows 7/8, specifically in Windowed mode, at the highest resolution (max available for the monitor)

• We have a scene that has a Bloom and Chromatic Aberration effect over the scene - this is our in-wold login scene - we use UniSWF on the main render camera for our login elements in conjunction with GUI for entering Text Fields

• The next scene has the same PPE's applied and is our in-world load save scene

The problem is - if running in windowed mode (which our app needs to) and the Windows Title Bar is partially off screen (which it is, because when setting the screen resolution the system does not account for the title bar height when the screen renders), the main camera does not render if there are any post process effects applied to the scenes UNLESS you move the top bar/double click it to resize the window to fit the screen space. The UniSWF HUD layer will render with no problems but the world will not.

Any solutions?