From d4676a426cd9042411a1762e0d96a8b75690f1aa Mon Sep 17 00:00:00 2001
From: Andrew Ozz <azaozz@git.wordpress.org>
Date: Tue, 8 May 2018 20:53:12 +0000
Subject: [PATCH] TinyMCE: fix setting of zIndex on the dialogs.

Props subrataemfluence, azaozz.
See #43984.

git-svn-id: https://develop.svn.wordpress.org/trunk@43181 602fd350-edb4-49c9-b593-d223f7449a82
---
 src/wp-admin/js/customize-controls.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/wp-admin/js/customize-controls.js b/src/wp-admin/js/customize-controls.js
index 4e3da867a7..ed75ba3df1 100644
--- a/src/wp-admin/js/customize-controls.js
+++ b/src/wp-admin/js/customize-controls.js
@@ -9252,8 +9252,8 @@
 		api.bind( 'change', startAutosaving );
 
 		// Make sure TinyMCE dialogs appear above Customizer UI.
-		$( document ).one( 'wp-before-tinymce-init', function() {
-			if ( ! window.tinymce.ui.FloatPanel.zIndex || window.tinymce.ui.FloatPanel.zIndex < 500001 ) {
+		$( document ).one( 'tinymce-editor-setup', function() {
+			if ( window.tinymce.ui.FloatPanel && ( ! window.tinymce.ui.FloatPanel.zIndex || window.tinymce.ui.FloatPanel.zIndex < 500001 ) ) {
 				window.tinymce.ui.FloatPanel.zIndex = 500001;
 			}
 		} );