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src/stores/RoomViewStore.js

@@ -224,6 +224,8 @@ class RoomViewStore extends Store {
                 err: err,
             });
             let msg = err.message ? err.message : JSON.stringify(err);
+            // XXX: We are relying on the error message returned by browsers here.
+            // This isn't great, but it does generalize the error being shown to users.
             if (msg && msg.startsWith("CORS request rejected")) {
                 msg = _t("There was an error joining the room");
             }