Ticket #5846: 5846_1.patch

_source/plugins/liststyle/plugin.js

@@ -10 +10 @@
                 init : function( editor )
                 {
 
-                        editor.addCommand( 'numberedListStyle', new CKEDITOR.dialogCommand( 'numberedListStyle' ) );
+                        var numberedListStyle = new CKEDITOR.dialogCommand( 'numberedListStyle' );
+                        numberedListStyle.canUndo = 1;
+                        editor.addCommand( 'numberedListStyle', numberedListStyle );
                         CKEDITOR.dialog.add( 'numberedListStyle', this.path + 'dialogs/liststyle.js' );
-                        editor.addCommand( 'bulletedListStyle', new CKEDITOR.dialogCommand( 'bulletedListStyle' ) );
+
+                        var bulletedListStyle = new CKEDITOR.dialogCommand( 'bulletedListStyle' );
+                        bulletedListStyle.canUndo = 1;
+                        editor.addCommand( 'bulletedListStyle', bulletedListStyle );
                         CKEDITOR.dialog.add( 'bulletedListStyle', this.path + 'dialogs/liststyle.js' );
 
                         //Register map group;