From 311167bdc57590d8b311cb5ac0135c2c1c85ee96 Mon Sep 17 00:00:00 2001
From: Monica Kozbial <kozbial@google.com>
Date: Tue, 29 Sep 2020 15:58:19 -0700
Subject: [PATCH] Fix render issue with block factory connection dropdown
 (#4334)

---
 demos/blockfactory/blocks.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/demos/blockfactory/blocks.js b/demos/blockfactory/blocks.js
index 3cb7ca29b..65f75665e 100644
--- a/demos/blockfactory/blocks.js
+++ b/demos/blockfactory/blocks.js
@@ -87,7 +87,9 @@ Blockly.Blocks['factory_base'] = {
     type.setShadow(true);
     type.outputConnection.connect(this.getInput(outputType).connection);
     type.initSvg();
-    type.render();
+    if (this.rendered) {
+      type.render();
+    }
   },
   updateShape_: function(option) {
     var outputExists = this.getInput('OUTPUTTYPE');