If both a Safari window and Web Inspector window are in split screen mode, closing the Web Inspector window can cause the entire screen to go black. Furthermore, the best way to get out of this state is to quit Safari. <rdar://problem/22355292>
Created attachment 260557 [details] Patch
Comment on attachment 260557 [details] Patch r=me
Comment on attachment 260557 [details] Patch Clearing flags on attachment: 260557 Committed r189337: <http://trac.webkit.org/changeset/189337>
All reviewed patches have been landed. Closing bug.