From 46078f6e851408eb696fcc8719cd14a30b75bb96 Mon Sep 17 00:00:00 2001
From: Chris Malley <cmalley@pixelzoom.com>
Date: Sat, 19 Jan 2019 17:04:58 -0700
Subject: [PATCH] hideList should be a noop if the list is not visible, #445

---
 js/ComboBox.js | 17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

diff --git a/js/ComboBox.js b/js/ComboBox.js
index 5b9aff3c..2e040a48 100644
--- a/js/ComboBox.js
+++ b/js/ComboBox.js
@@ -230,7 +230,6 @@ define( require => {
      * @public
      */
     showList() {
-
       if ( !this.listBox.visible ) {
         this.phetioStartEvent( 'popupShown' );
 
@@ -251,16 +250,18 @@ define( require => {
      * @public
      */
     hideList() {
-      this.phetioStartEvent( 'popupHidden' );
+      if ( this.listBox.visible ) {
+        this.phetioStartEvent( 'popupHidden' );
 
-      if ( this.display && this.display.hasInputListener( this.clickToDismissListener ) ) {
-        this.display.removeInputListener( this.clickToDismissListener );
-        this.display = null;
-      }
+        if ( this.display && this.display.hasInputListener( this.clickToDismissListener ) ) {
+          this.display.removeInputListener( this.clickToDismissListener );
+          this.display = null;
+        }
 
-      this.listBox.visible = false;
+        this.listBox.visible = false;
 
-      this.phetioEndEvent();
+        this.phetioEndEvent();
+      }
     },
 
     /**