From 43b9dedeea3e9d7a41d604df36d4aa0a108b748b Mon Sep 17 00:00:00 2001
From: Weston Ruter <westonruter@git.wordpress.org>
Date: Wed, 23 Mar 2016 00:52:20 +0000
Subject: [PATCH] Customize: Prevent preview `iframe` from showing until fully
 loaded.

Fixes issue where the Customizer preview window can appear to momentarily bounce to the top when being refreshed. Regression from [36532].

See #31195.
Fixes #36276.


git-svn-id: https://develop.svn.wordpress.org/trunk@37060 602fd350-edb4-49c9-b593-d223f7449a82
---
 src/wp-admin/css/customize-controls.css | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/wp-admin/css/customize-controls.css b/src/wp-admin/css/customize-controls.css
index 1d69609d58..36e512aa01 100644
--- a/src/wp-admin/css/customize-controls.css
+++ b/src/wp-admin/css/customize-controls.css
@@ -613,6 +613,9 @@ p.customize-section-description {
 	height: 100%;
 	position: absolute;
 }
+#customize-preview iframe + iframe {
+	visibility: hidden;
+}
 
 .wp-full-overlay-sidebar {
 	background: #eee;