Index: typo3/sysext/t3skin/extjs/xtheme-t3skin.css
===================================================================
--- typo3/sysext/t3skin/extjs/xtheme-t3skin.css	(revision 9919)
+++ typo3/sysext/t3skin/extjs/xtheme-t3skin.css	(revision )
@@ -1198,6 +1198,7 @@
 
 .x-grid3-row-expander {
 	background-image:url(images/grid/row-expand-sprite.png);
+	width: 18px;
 }
 
 .x-grid3-row-checker, .x-grid3-hd-checker {