From dea68129ff763bf38f632ad7373072faf1fda1ba Mon Sep 17 00:00:00 2001
From: =?utf8?q?Aleksander=20=C5=81ukasz?=
 <aleksander.lukasz@nowoczesnapolska.org.pl>
Date: Wed, 25 Jun 2014 09:59:05 +0200
Subject: [PATCH 1/1] editor: canvas fix - check for the case when mutation
 concerns already detached text node

---
 src/editor/modules/documentCanvas/canvas/canvas.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/editor/modules/documentCanvas/canvas/canvas.js b/src/editor/modules/documentCanvas/canvas/canvas.js
index d4e16ad..50c0ae4 100644
--- a/src/editor/modules/documentCanvas/canvas/canvas.js
+++ b/src/editor/modules/documentCanvas/canvas/canvas.js
@@ -200,7 +200,7 @@ $.extend(Canvas.prototype, Backbone.Events, {
         /* globals MutationObserver */
         var observer = new MutationObserver(function(mutations) {
             mutations.forEach(function(mutation) {
-                if(documentElement.DocumentTextElement.isContentContainer(mutation.target)) {
+                if(canvas.dom[0].contains(mutation.target) && documentElement.DocumentTextElement.isContentContainer(mutation.target)) {
                     observer.disconnect();
                     if(mutation.target.data === '') {
                         mutation.target.data = utils.unicode.ZWS;
-- 
2.20.1