From 26d7e2732780b33438a085e6dbab112dfb8148f0 Mon Sep 17 00:00:00 2001
From: Matt Westcott <matt@west.co.tt>
Date: Fri, 13 May 2016 14:30:32 +0100
Subject: [PATCH] Prevent unsaved edit warning following validation errors on
 preview - fixes #2602

---
 wagtail/wagtailadmin/static_src/wagtailadmin/js/page-editor.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/wagtail/wagtailadmin/static_src/wagtailadmin/js/page-editor.js b/wagtail/wagtailadmin/static_src/wagtailadmin/js/page-editor.js
index 20c495bd2..7bf427b5e 100644
--- a/wagtail/wagtailadmin/static_src/wagtailadmin/js/page-editor.js
+++ b/wagtail/wagtailadmin/static_src/wagtailadmin/js/page-editor.js
@@ -461,6 +461,7 @@ $(function() {
 
                     } else {
                         previewWindow.close();
+                        disableDirtyFormCheck();
                         document.open();
                         document.write(data);
                         document.close();