Index: /CKEditor/trunk/CHANGES.html
===================================================================
--- /CKEditor/trunk/CHANGES.html	(revision 5909)
+++ /CKEditor/trunk/CHANGES.html	(revision 5910)
@@ -51,4 +51,5 @@
 		<li><a href="http://dev.ckeditor.com/ticket/6261">#6261</a> : Focus and infinite loop between multiple editors.</li>
 		<li><a href="http://dev.ckeditor.com/ticket/6170">#6170</a> : Dedicated class names are removed from floating panels when opening another panel.</li>
+		<li><a href="http://dev.ckeditor.com/ticket/6339">#6339</a> : Autogrow plugin now doesn't work on maximized editors.</li>
 	</ul>
 	<h3>
Index: /CKEditor/trunk/_source/plugins/autogrow/plugin.js
===================================================================
--- /CKEditor/trunk/_source/plugins/autogrow/plugin.js	(revision 5909)
+++ /CKEditor/trunk/_source/plugins/autogrow/plugin.js	(revision 5910)
@@ -42,7 +42,12 @@
 				editor.on( eventName, function( evt )
 				{
+					var maximize = editor.getCommand( 'maximize' );
 					// Some time is required for insertHtml, and it gives other events better performance as well.
-					if ( evt.editor.mode == 'wysiwyg' )
+					if ( evt.editor.mode == 'wysiwyg' &&
+						// Disable autogrow when the editor is maximized .(#6339)
+						( !maximize || maximize.state != CKEDITOR.TRISTATE_ON ) )
+					{
 						setTimeout( function(){ resizeEditor( evt.editor ); }, 100 );
+					}
 				});
 			}