From eb8aef28c82d86f43ac16d80d5c3a1b6a39561ac Mon Sep 17 00:00:00 2001
From: jmoenig <jens@moenig.org>
Date: Thu, 11 Jul 2013 14:54:44 +0200
Subject: fixed occasional flickering in scripting areas

(caused by deleted feedback morphs, a bug that surfaced in Chrome 28 on
OSX and may be due to a possible Chrome GC issue)
---
 blocks.js   | 3 ++-
 history.txt | 4 ++++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/blocks.js b/blocks.js
index 2280501..4501b0f 100644
--- a/blocks.js
+++ b/blocks.js
@@ -155,7 +155,7 @@ DialogBoxMorph, BlockInputFragmentMorph, PrototypeHatBlockMorph*/
 
 // Global stuff ////////////////////////////////////////////////////////
 
-modules.blocks = '2013-July-09';
+modules.blocks = '2013-July-11';
 
 var SyntaxElementMorph;
 var BlockMorph;
@@ -4418,6 +4418,7 @@ ScriptsMorph.prototype.step = function () {
 
     if (this.feedbackMorph.parent) {
         this.feedbackMorph.destroy();
+        this.feedbackMorph.parent = null;
     }
     if (hand.children.length === 0) {
         return null;
diff --git a/history.txt b/history.txt
index ceaf1d6..6140b94 100755
--- a/history.txt
+++ b/history.txt
@@ -1799,3 +1799,7 @@ ______
 130710
 ------
 * GUI: Reset hidden primitives and code mappings upon loading a new project
+
+130711
+------
+* Blocks: fixed occasional flickering in scripting areas (caused by deleted feedback morphs, a bug that surfaced in Chrome 28 on OSX and may be due to a possible Chrome GC issue)
-- 
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