diff --git a/app/assets/stylesheets/zammad.scss b/app/assets/stylesheets/zammad.scss
index 6f570e8b6..7c22412ff 100644
--- a/app/assets/stylesheets/zammad.scss
+++ b/app/assets/stylesheets/zammad.scss
@@ -5729,6 +5729,7 @@ footer {
 /* allow/show autocomplete in modal dialog */
 .ui-autocomplete.ui-widget-content {
   @extend .zIndex-9;
+  position: absolute;
 }
 
 .drox {