diff --git a/lib/keyserver-conn/keyserver-connection-handler.js b/lib/keyserver-conn/keyserver-connection-handler.js
--- a/lib/keyserver-conn/keyserver-connection-handler.js
+++ b/lib/keyserver-conn/keyserver-connection-handler.js
@@ -14,6 +14,7 @@
 } from '../selectors/keyserver-selectors.js';
 import { isLoggedInToKeyserver } from '../selectors/user-selectors.js';
 import { useInitialNotificationsEncryptedMessage } from '../shared/crypto-utils.js';
+import { useStaffAlert } from '../shared/staff-utils.js';
 import type { BaseSocketProps } from '../socket/socket.react.js';
 import {
   logInActionSources,
@@ -50,6 +51,8 @@
   const prevCookieRef = React.useRef(cookie);
   const notifsSessionReassignmentPromise = React.useRef<?Promise<mixed>>(null);
 
+  const { showAlertToStaff } = useStaffAlert();
+
   React.useEffect(() => {
     const prevCookie = prevCookieRef.current;
     prevCookieRef.current = cookie;
@@ -58,6 +61,13 @@
       return;
     }
 
+    if (prevCookie) {
+      showAlertToStaff(
+        'Reassigning a notif session',
+        `prevCookie=${prevCookie} cookie=${cookie}`,
+      );
+    }
+
     notifsSessionReassignmentPromise.current = (async () => {
       await notifsSessionReassignmentPromise.current;
       await olmAPI.reassignNotificationsSession?.(
@@ -66,7 +76,7 @@
         keyserverID,
       );
     })();
-  }, [cookie, keyserverID, olmAPI]);
+  }, [cookie, keyserverID, olmAPI, showAlertToStaff]);
 
   const dataLoaded = useSelector(state => state.dataLoaded);