Exception in instances and volumes tab

If a user has access to more than one tenant and it has also a volume mounted to an instance.
When retrieving the instances and volumes of another tenant it fails with the exception:

KeyError at /nova/instances_and_volumes/
File "/usr/lib/python2.6/site-packages/django/core/handlers/base.py" in get_response
  111. response = callback(request, *callback_args, **callback_kwargs)
File "/usr/lib/python2.6/site-packages/horizon/decorators.py" in dec
  40. return view_func(request, *args, **kwargs)
File "/usr/lib/python2.6/site-packages/horizon/decorators.py" in dec
  55. return view_func(request, *args, **kwargs)
File "/usr/lib/python2.6/site-packages/horizon/decorators.py" in dec
  40. return view_func(request, *args, **kwargs)
File "/usr/lib/python2.6/site-packages/django/views/generic/base.py" in view
  47. return self.dispatch(request, *args, **kwargs)
File "/usr/lib/python2.6/site-packages/django/views/generic/base.py" in dispatch
  68. return handler(request, *args, **kwargs)
File "/usr/lib/python2.6/site-packages/horizon/tables/views.py" in get
  105. handled = self.construct_tables()
File "/usr/lib/python2.6/site-packages/horizon/tables/views.py" in construct_tables
  96. handled = self.handle_table(table)
File "/usr/lib/python2.6/site-packages/horizon/tables/views.py" in handle_table
  68. data = self._get_data_dict()
File "/usr/lib/python2.6/site-packages/horizon/tables/views.py" in _get_data_dict
  37. self._data[table._meta.name] = data_func()
File "/usr/lib/python2.6/site-packages/horizon/dashboards/nova/instances_and_volumes/views.py" in get_volumes_data
  75. att['instance'] = instances[att['server_id']]

Reproducible: always
1. Create Project1
2. Create Project2
3. Assign user as member of Project1
4. Assign user as member of Project2
5. Create instance in Project1
6. Create a volume
7. Attach volume to the instance
8. Change to Project2 and look at Instances & Volumes

Actual Result:
Exception fired

Expected Result:
No error