diff --git a/core/themes/seven/css/components/dialog.theme.css b/core/themes/seven/css/components/dialog.theme.css
index e7096b5ff59..60954d63047 100644
--- a/core/themes/seven/css/components/dialog.theme.css
+++ b/core/themes/seven/css/components/dialog.theme.css
@@ -7,9 +7,6 @@
   border: 0;
   position: absolute;
   z-index: 1260;
-  /* jQuery UI modals crash in Firefox unless overflow is set to hidden.
-     See: https://www.drupal.org/node/2423781 */
-  overflow: hidden;
   padding: 0;
 }
 @media all and (max-width: 48em) { /* 768px */