diff --git a/admin/javascript/LeftAndMain.Preview.js b/admin/javascript/LeftAndMain.Preview.js
index d564263c1..f1297af70 100644
--- a/admin/javascript/LeftAndMain.Preview.js
+++ b/admin/javascript/LeftAndMain.Preview.js
@@ -73,6 +73,7 @@
 					this.unblock();
 				} else {
 					this.block();
+					this.toggle();
 				}
 			},