diff -u b/core/profiles/demo_umami/themes/umami/css/components/navigation/menu-main/menu-main.css b/core/profiles/demo_umami/themes/umami/css/components/navigation/menu-main/menu-main.css
--- b/core/profiles/demo_umami/themes/umami/css/components/navigation/menu-main/menu-main.css
+++ b/core/profiles/demo_umami/themes/umami/css/components/navigation/menu-main/menu-main.css
@@ -17,11 +17,11 @@
   transition: max-height 0.5s ease-in;
 }
 .menu-main li {
-  display: none;
+  visibility: hidden;
 }
 @media screen and (prefers-reduced-motion: reduce) {
   .menu-main {
-    transition: none;
+    transition: 0s;
   }
 }
 
@@ -35,7 +35,7 @@
   overflow-y: auto;
 }
 .menu-main--active li {
-  display: block;
+  visibility: inherit;
 }
 
 .menu-main-toggle {