Index: wp-includes/js/tinymce/plugins/wpeditimage/css/editimage.css
===================================================================
--- wp-includes/js/tinymce/plugins/wpeditimage/css/editimage.css	(revision 23035)
+++ wp-includes/js/tinymce/plugins/wpeditimage/css/editimage.css	(working copy)
@@ -382,11 +382,13 @@
 }
 
 .rtl .show-align,
+.rtl #img_size,
 .rtl .alignright,
-.rtl #img_size {
+.rtl #imgdemo.alignleft {
 	float: left;
 }
 
+
 .rtl tr.image-size label,
 .rtl tr.image-size input,
 .rtl #img_dim label,
@@ -394,7 +396,8 @@
 .rtl #img_prop label,
 .rtl #img_prop input,
 .rtl #img_size_div,
-.rtl .alignleft {
+.rtl .alignleft,
+.rtl #imgdemo.alignright {
 	float: right;
 }