diff --git a/src/js/_enqueues/wp/customize/controls.js b/src/js/_enqueues/wp/customize/controls.js
index 357964fcf9..2edc498e42 100644
--- a/src/js/_enqueues/wp/customize/controls.js
+++ b/src/js/_enqueues/wp/customize/controls.js
@@ -6289,6 +6289,7 @@
 				name: 'customize-' + previewFrame.channel()
 			} );
 			previewFrame.iframe.attr( 'onmousewheel', '' ); // Workaround for Safari bug. See WP Trac #38149.
+			previewFrame.iframe.attr( 'sandbox', 'allow-forms allow-modals allow-orientation-lock allow-pointer-lock allow-popups allow-popups-to-escape-sandbox allow-presentation allow-same-origin allow-scripts' );
 
 			if ( ! hasPendingChangesetUpdate ) {
 				previewFrame.iframe.attr( 'src', urlParser.href );
diff --git a/src/js/_enqueues/wp/customize/preview.js b/src/js/_enqueues/wp/customize/preview.js
index 4d971cc628..e8f7d041c0 100644
--- a/src/js/_enqueues/wp/customize/preview.js
+++ b/src/js/_enqueues/wp/customize/preview.js
@@ -379,11 +379,6 @@
 			queryParams.customize_messenger_channel = api.settings.channel;
 		}
 		element.search = $.param( queryParams );
-
-		// Prevent links from breaking out of preview iframe.
-		if ( api.settings.channel ) {
-			element.target = '_self';
-		}
 	};
 
 	/**