Index: src/wp-content/themes/twentyseventeen/assets/js/global.js
===================================================================
--- src/wp-content/themes/twentyseventeen/assets/js/global.js	(revision 40900)
+++ src/wp-content/themes/twentyseventeen/assets/js/global.js	(working copy)
@@ -111,7 +111,7 @@
 	function belowEntryMetaClass( param ) {
 		var sidebarPos, sidebarPosBottom;
 
-		if ( ! $body.hasClass( 'has-sidebar' ) || (
+		if ( ! $sidebar.length || (
 			$body.hasClass( 'search' ) ||
 			$body.hasClass( 'single-attachment' ) ||
 			$body.hasClass( 'error404' ) ||