diff -r adad5563603c -r 906a6c7c7943 client/src/reducers/sessionsReducer.js
--- a/client/src/reducers/sessionsReducer.js	Mon Jul 31 23:18:38 2017 +0200
+++ b/client/src/reducers/sessionsReducer.js	Tue Aug 01 12:20:14 2017 +0200
@@ -75,6 +75,9 @@
       const session = state.get(index);
       return state.set(index, session.merge({action: ActionEnum.NONE}));
     }
+    case types.AUTH_LOGOUT: {
+      return Immutable.List(); // empty session list on logout
+    }
     default:
       return state;
   }