From 471b54bea835c5218ebcc36b85f04dc00c4bb371 Mon Sep 17 00:00:00 2001
From: Neil Fraser <neil.fraser@gmail.com>
Date: Wed, 20 Feb 2019 08:59:32 -0800
Subject: [PATCH] Disable orphaned mutator blocks. (#2304)

---
 core/mutator.js | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/core/mutator.js b/core/mutator.js
index 004be6996..da50251ea 100644
--- a/core/mutator.js
+++ b/core/mutator.js
@@ -141,6 +141,7 @@ Blockly.Mutator.prototype.createEditor_ = function() {
     var quarkXml = null;
   }
   var workspaceOptions = {
+    disabledPatternId: this.block_.workspace.options.disabledPatternId,
     languageTree: quarkXml,
     parentWorkspace: this.block_.workspace,
     pathToMedia: this.block_.workspace.options.pathToMedia,
@@ -153,6 +154,7 @@ Blockly.Mutator.prototype.createEditor_ = function() {
   };
   this.workspace_ = new Blockly.WorkspaceSvg(workspaceOptions);
   this.workspace_.isMutator = true;
+  this.workspace_.addChangeListener(Blockly.Events.disableOrphans);
 
   // Mutator flyouts go inside the mutator workspace's <g> rather than in
   // a top level svg. Instead of handling scale themselves, mutators