Don't move current open submenus, see #18382

git-svn-id: http://svn.automattic.com/wordpress/trunk@18940 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/js/common.dev.js

@@ -207,6 +207,9 @@ $(document).ready( function() {
 		over: function(e){
 			var b, h, o, f, m = $(this).find('.wp-submenu');
 
+			if ( !$(document.body).hasClass('folded') && $(this).hasClass('wp-menu-open') )
+				return;
+
 			b = $(this).offset().top + m.height() + 1; // Bottom offset of the menu
 			h = $('#wpwrap').height(); // Height of the entire page
 			o = 60 + b - h;