diff -u b/core/misc/form.es6.js b/core/misc/form.es6.js
--- b/core/misc/form.es6.js
+++ b/core/misc/form.es6.js
@@ -265,13 +265,15 @@
    * @fires event:formFragmentLinkClickOrHashChange
    */
   const handleFragmentLinkClickOrHashChange = function triggerFragmentLinkClickOrChange(e) {
-    const $target = e.type === 'click' ? (e.currentTarget.location ? $(e.currentTarget.location.hash) : $(e.currentTarget.hash)) : $(`#${location.hash.substr(1)}`);
+    const $target = e.type === 'click' ? (e.currentTarget.location ?
+      $(e.currentTarget.location.hash) : $(e.currentTarget.hash)) :
+      $(`#${location.hash.substr(1)}`);
 
     $('body').trigger('formFragmentLinkClickOrHashChange', [$target]);
 
     /**
-     * Interaction with the page fragment should set focus, but event timing
-     * issues in multiple browsers require a timeout.
+     * Clicking a fragment link or a hash change should focus the target
+     * element, but event timing issues in multiple browsers require a timeout.
      */
     setTimeout(() => {
       $target.focus();
@@ -279,7 +281,7 @@
   };
 
   // Binds a listener to handle URL fragment changes.
-  $(window).on('hashchange.form-fragment', debounce(handleFragmentLinkClickOrHashChange, 20));
+  $(window).on('hashchange.form-fragment', debounce(handleFragmentLinkClickOrHashChange, 300, true));
 
   /**
    * Binds a listener to handle clicks on fragment links and absolute URL links
@@ -288,5 +290,5 @@
    * is already in the URL.
    */
-  $(document).on('click.form-fragment', 'a[href*="#"]', debounce(handleFragmentInteraction, 20));
+  $(document).on('click.form-fragment', 'a[href*="#"]', debounce(handleFragmentLinkClickOrHashChange, 300, true));
 
 }(jQuery, Drupal, Drupal.debounce));
diff -u b/core/misc/form.js b/core/misc/form.js
--- b/core/misc/form.js
+++ b/core/misc/form.js
@@ -137,5 +137,5 @@
 
-  $(window).on('hashchange.form-fragment', debounce(handleFragmentLinkClickOrHashChange, 20));
+  $(window).on('hashchange.form-fragment', debounce(handleFragmentLinkClickOrHashChange, 300, true));
 
-  $(document).on('click.form-fragment', 'a[href*="#"]', debounce(handleFragmentInteraction, 20));
+  $(document).on('click.form-fragment', 'a[href*="#"]', debounce(handleFragmentLinkClickOrHashChange, 300, true));
 })(jQuery, Drupal, Drupal.debounce);
\ No newline at end of file