Ticket #46686: 46686.diff

wp-admin/customize.php

@@ -187 +187 @@
                                 <span class="controls"><?php _e( 'Customize' ); ?></span>
                                 <span class="preview"><?php _e( 'Preview' ); ?></span>
                         </button>
-                        <a class="customize-controls-close" href="<?php echo esc_url( $wp_customize->get_return_url() ); ?>">
+                        <a class="customize-controls-close" href="<?php echo esc_url( admin_url( 'themes.php' ) ); ?>">
                                 <span class="screen-reader-text"><?php _e( 'Close the Customizer and go back to the previous page' ); ?></span>
                         </a>
                 </div>