Created attachment 108062 [details]
Primary Test Case
Steps to reproduce:
1. Ensure WebKit has "Use Multi-process Windows" on from the Debug menu (default).
2. Open the attached test case
3. Double click the window area to enter full-screen
The screen turns black and then shows the red square in the middle.
The screen turns black, and then flashes into white momentarily, before turning black again and showing the red square in the middle.
Created attachment 108688 [details]
Committed r95978: <http://trac.webkit.org/changeset/95978>