Index: /CKEditor/trunk/_source/plugins/resize/plugin.js
===================================================================
--- /CKEditor/trunk/_source/plugins/resize/plugin.js	(revision 7385)
+++ /CKEditor/trunk/_source/plugins/resize/plugin.js	(revision 7386)
@@ -45,5 +45,6 @@
 					height =  Math.max( config.resize_minHeight, Math.min( internalHeight, config.resize_maxHeight ) );
 
-				editor.resize( width, height );
+				// DO NOT impose fixed size with single direction resize. (#6308)
+				editor.resize( resizeHorizontal ? width : null, height );
 			}
 
Index: /CKEditor/trunk/CHANGES.html
===================================================================
--- /CKEditor/trunk/CHANGES.html	(revision 7385)
+++ /CKEditor/trunk/CHANGES.html	(revision 7386)
@@ -59,4 +59,5 @@
 		<li><a href="http://dev.ckeditor.com/ticket/8691">#8691</a> : [IE] Fix paste invalid HTML crashes browser.</li>
 		<li><a href="http://dev.ckeditor.com/ticket/8345">#8345</a> : [IE] Selection is properly restored after close Link dialog.</li>
+		<li><a href="http://dev.ckeditor.com/ticket/6308">#6308</a> : Fix vertical-only resize should not impose fix width on editor chrome.</li>
 	</ul>
 	<h3>