diff -u b/core/modules/forum/src/Form/Overview.php b/core/modules/forum/src/Form/Overview.php
--- b/core/modules/forum/src/Form/Overview.php
+++ b/core/modules/forum/src/Form/Overview.php
@@ -66,7 +66,7 @@
         $term = $form['terms'][$key]['#term'];
         $form['terms'][$key]['term']['#url'] = Url::fromRoute('forum.page', ['taxonomy_term' => $term->id()]);
         unset($form['terms'][$key]['operations']['#links']['delete']);
-        $route_parameters = isset($form['terms'][$key]['operations']['#links']['edit']) ? $form['terms'][$key]['operations']['#links']['edit']['url']->getRouteParameters() : [];
+        $route_parameters = isset($form['terms'][$key]['operations']['#links']['edit']) ? $form['terms'][$key]['operations']['#links']['edit']['url']->getRouteParameters() : $term->toUrl('edit-form')->getRouteParameters();
         if (!empty($term->forum_container->value)) {
           $url_edit_container_form = Url::fromRoute('entity.taxonomy_term.forum_edit_container_form', $route_parameters);
           if ($url_edit_container_form->access()) {