Please describe the problem:
My X server uses Xinerama to bind two physical displays into one extra-wide display. When I take a screenshot using gnome-screenshot, the dimensions of the image are correct. However, the area of the PNG where the extra screen ought to be is transparent. See the "screenshot" for details.

Steps to reproduce:
1. Set up Xinerama using two screens with the second screen to the right of the first screen.
2. Try to take a screenshot.



Actual results:
The PNG file is transparent in places where it shouldn't be.

Expected results:
The PNG file should contain a complete screenshot.

Does this happen every time?
Yes.

Other information:
The problem is a little bit hard to describe. Download the screenshot for a good idea of what does (or doesn't) happen.