german sort is wrong

Hallo,

i make initdb with --locale='de_DE.utf8'.

the result is:

The database cluster will be initialized with locale de_DE.utf8.
The default database encoding has accordingly been set to UTF8.
The default text search configuration will be set to "german".

when i make a sort this is the result:

select * from sgvs.test order by bezeichnung;

id | bezeichnung | schlagworte
----+-------------+-------------
  11 | Anton       |
   8 | Ätna        |
  10 | Erna        |
   2 | Kammer      |
   6 | Kanten      |
   1 | Käse        |
   4 | Köbern      |
   3 | Kümmern     |
   5 | Kuno        |
   9 | Möbel       |
   7 | Zuber       |

in german this is wrong. what is the problem?