Index: /CKEditor/trunk/_source/plugins/font/plugin.js
===================================================================
--- /CKEditor/trunk/_source/plugins/font/plugin.js	(revision 3449)
+++ /CKEditor/trunk/_source/plugins/font/plugin.js	(revision 3450)
@@ -63,4 +63,6 @@
 					else
 						style.apply( editor.document );
+
+					editor.fire( 'saveSnapshot' );
 				},
 
Index: /CKEditor/trunk/_source/plugins/format/plugin.js
===================================================================
--- /CKEditor/trunk/_source/plugins/format/plugin.js	(revision 3449)
+++ /CKEditor/trunk/_source/plugins/format/plugin.js	(revision 3450)
@@ -55,4 +55,6 @@
 
 					styles[ value ].apply( editor.document );
+
+					editor.fire( 'saveSnapshot' );
 				},
 
Index: /CKEditor/trunk/_source/plugins/stylescombo/plugin.js
===================================================================
--- /CKEditor/trunk/_source/plugins/stylescombo/plugin.js	(revision 3449)
+++ /CKEditor/trunk/_source/plugins/stylescombo/plugin.js	(revision 3450)
@@ -113,4 +113,6 @@
 						else
 							style.apply( editor.document );
+
+						editor.fire( 'saveSnapshot' );
 					},