check if a part has been loaded already before loading that part

fixes #37

inc/functions.php

@@ -339,7 +339,14 @@ public function add_template_parts( $layout = '', $container = '', $class = '' )
 			if ( is_array( $parts ) && ! $this->templates_loaded ) {
 				do_action( 'wds_page_builder_before_load_parts' );
 				foreach( $parts as $this->parts_index => $part ) {
-					$this->load_template_part( $part, $container, $class );
+
+					// check if the current part was loaded already
+					if ( ( '' !== $this->get_part() ) && $this->get_part() !== $part['template_group'] ) {
+
+						$this->load_template_part( $part, $container, $class );
+
+					}
+
 				}
 				do_action( 'wds_page_builder_after_load_parts' );
 			}