Visit while having Ephy window maximized:
http://www.youtube.com/share?v=W91sqAs-_-g&embed=1

Problem:
The document view gets a free gray space to the right (see screenshot).

Expected:
The window either resizes or the .resize() is ignored

How to solve:
a) Switch to another tab, go back to the broken tab.
or
b) Open the offending website while ephy window is not maximized

Note this javascript on youtube.com:
<script type="text/javascript">
<!-- 

function fillAll()
{
	
	window.resizeTo(590,620); //resize the window to the correct size
	
	window.focus();
}
var remote;
function launch_share(n,u,w,h) {
	remote=window.open(u,n,'width='+w+',height='+h+',resizable=yes,scrollbars=no,status=0');
	remote.opener = self;
	if (remote != null) {
		if (remote.opener == null )
			remote.opener = self;
	}
	remote.focus();
}
//  -->
</script>