Ticket #38648: 38648.0.diff

src/wp-includes/class-wp-customize-manager.php

@@ -1232 +1232 @@
                 wp_enqueue_script( 'customize-preview' );
                 add_action( 'wp_head', array( $this, 'customize_preview_loading_style' ) );
                 add_action( 'wp_footer', array( $this, 'customize_preview_settings' ), 20 );
+                add_filter( 'get_edit_post_link', '__return_empty_string' );
 
                 /**
                  * Fires once the Customizer preview has initialized and JavaScript