git commit -m 'Issue #3198948 by hatuhay: Toggle icon displaying X upon page load'

templates/layout/page.html.twig

@@ -94,7 +94,7 @@
           {% endif %}
             {{ page.header }}
             {% if page.primary_menu or page.header_form %}
-              <button class="navbar-toggler navbar-toggler-right" type="button" data-toggle="collapse" data-target="#CollapsingNavbar" aria-controls="CollapsingNavbar" aria-expanded="false" aria-label="Toggle navigation"><span class="navbar-toggler-icon"></span></button>
+              <button class="navbar-toggler navbar-toggler-right collapsed" type="button" data-toggle="collapse" data-target="#CollapsingNavbar" aria-controls="CollapsingNavbar" aria-expanded="false" aria-label="Toggle navigation"><span class="navbar-toggler-icon"></span></button>
               <div class="collapse navbar-collapse justify-content-end" id="CollapsingNavbar">
                 {{ page.primary_menu }}
                 {% if page.header_form %}