diff --git a/lib/components/user-identity-cache.react.js b/lib/components/user-identity-cache.react.js
--- a/lib/components/user-identity-cache.react.js
+++ b/lib/components/user-identity-cache.react.js
@@ -154,7 +154,7 @@
         for (let i = 0; i < needFetch.length; i++) {
           const userID = needFetch[i];
           if (!userIdentities) {
-            resultMap.set(userID, null);
+            resultMap.set(userID, undefined);
             continue;
           }
           const identityMatch = userIdentities.identities[userID];
@@ -174,7 +174,7 @@
             });
             continue;
           }
-          resultMap.set(userID, undefined);
+          resultMap.set(userID, null);
         }
         return resultMap;
       })();