Index: wp-includes/js/tinymce/plugins/wordpress/editor_plugin.js
===================================================================
--- wp-includes/js/tinymce/plugins/wordpress/editor_plugin.js	(revision 5966)
+++ wp-includes/js/tinymce/plugins/wordpress/editor_plugin.js	(working copy)
@@ -246,7 +246,7 @@
 				content = content.replace(new RegExp('<(table( [^>]*)?)>.*?<((tr|thead)( [^>]*)?)>', 'mg'), '<$1><$3>');
 				content = content.replace(new RegExp('<(tr|thead|tfoot)>.*?<((td|th)( [^>]*)?)>', 'mg'), '<$1><$2>');
 				content = content.replace(new RegExp('</(td|th)>.*?<(td( [^>]*)?|th( [^>]*)?|/tr|/thead|/tfoot)>', 'mg'), '</$1><$2>');
-				content = content.replace(new RegExp('</tr>.*?<(tr|/table)>', 'mg'), '</tr><$1>');
+				content = content.replace(new RegExp('</tr>.*?<(tr.*?|/table)>', 'mg'), '</tr><$1>');
 				content = content.replace(new RegExp('<(/?(table|tbody|tr|th|td)[^>]*)>(\\s*|(<br ?/?>)*)*', 'g'), '<$1>');
 
 				// Pretty it up for the source editor.