diff --git a/src/Markdown/CommonMark/ExternalLinkRenderer.php b/src/Markdown/CommonMark/ExternalLinkRenderer.php
index 5f95cbba2..855881744 100644
--- a/src/Markdown/CommonMark/ExternalLinkRenderer.php
+++ b/src/Markdown/CommonMark/ExternalLinkRenderer.php
@@ -166,7 +166,7 @@ private function generateMentionLinkAttr(MentionLink $link): array
 
         if (MentionType::User === $link->getType() || MentionType::RemoteUser === $link->getType()) {
             $data['class'] = $data['class'].' u-url mention--user';
-            $data['data-action'] = 'mouseover->mentions#user_popup mentions#navigate_user';
+            $data['data-action'] = 'mouseover->mentions#user_popup mouseout->mentions#user_popup_out mentions#navigate_user';
         }
 
         return $data;