Issue #3324789 by schiz0id: H1 tags being rendered by page-title.html.twig...

Issue #3324789 by schiz0id: H1 tags being rendered by page-title.html.twig even when the title is undefined

templates/content/page-title.html.twig

@@ -13,7 +13,7 @@
  */
 #}
 {{ title_prefix }}
-{% if title %}
+{% if title|render|striptags|trim %}
   <h1{{ title_attributes.addClass(['display-4', 'text-center', 'page-title']) }}>{{ title }}</h1>
 {% endif %}
 {{ title_suffix }}