diff --git a/app/assets/javascripts/fly_out_nav.js b/app/assets/javascripts/fly_out_nav.js
index aabea56408a..ad957f132b8 100644
--- a/app/assets/javascripts/fly_out_nav.js
+++ b/app/assets/javascripts/fly_out_nav.js
@@ -49,7 +49,8 @@ export const hideSubLevelItems = (el) => {
 
   el.classList.remove('is-showing-fly-out');
   el.classList.remove('is-over');
-  subItems.style.display = 'none';
+  subItems.style.display = '';
+  subItems.style.transform = '';
   subItems.classList.remove('is-above');
 };
 
diff --git a/spec/javascripts/fly_out_nav_spec.js b/spec/javascripts/fly_out_nav_spec.js
index ea2a4caffaf..d7b7acaa3f4 100644
--- a/spec/javascripts/fly_out_nav_spec.js
+++ b/spec/javascripts/fly_out_nav_spec.js
@@ -59,7 +59,7 @@ describe('Fly out sidebar navigation', () => {
 
       expect(
         el.querySelector('.sidebar-sub-level-items').style.display,
-      ).toBe('none');
+      ).toBe('');
     });
 
     it('does not hude subitems on mobile', () => {