Multiple instance of iPhoneCheck

While trying to RTL the admin panel I dicovered that the iPhone like button for the slider actualy contains 6 nested instances on the YES/NO slide button for the slider.
Some digging into the code got me to this function in in class-admin-meta-boxes.php :

/**
     * Adds layout and slider metaboxes to pages and posts
     * @package Customizr
     * @since Customizr 1.0
     */
      function tc_post_meta_boxes() {//id, title, callback, post_type, context, priority, callback_args
           /***
            Determines which screens we display the box
          **/
          //1 - retrieves the custom post types
          $args                 = array(
          //'public'   => true,
          '_builtin' => false
          );
          $custom_post_types    = get_post_types($args);

          //2 - Merging with the builtin post types, pages and posts
          $builtin_post_types   = array(
            'page' => 'page',
            'post' => 'post'
            );
          $screens              = array_merge( $custom_post_types, $builtin_post_types );

          //3- Adding the meta-boxes to those screens
          foreach ( $screens as $key => $screen) {
              //skip if acf
              if ('acf' == $screen )
                continue;
	      else //JTS 2015 <<<<*** new line *********************
              add_meta_box(
                  'layout_sectionid' ,
                  __( 'Layout Options' , 'customizr' ),
                  array( $this , 'tc_post_layout_box' ),
                  $screen,
                  ( 'page' == $screen | 'post' == $screen ) ? 'side' : 'normal',//displays meta box below editor for custom post types
                  apply_filters('tc_post_meta_boxes_priority' , 'high', $screen )
              );
              add_meta_box(
                  'slider_sectionid' ,
                  __( 'Slider Options' , 'customizr' ),
                  array( $this , 'tc_post_slider_box' ),
                  $screen,
                  'normal' ,
                  apply_filters('tc_post_meta_boxes_priority' , 'high', $screen)
              );
	    endif // JTS 2015  <<<<*** new line *********************
          }//end foreach
      }

the two lines marked with // JTS 2015 are my addition, since it seems that the if statement does not skip the rest of the code as mention in the text above it.

Am I right?
Or I’ve done some damage? ??