Comment # 6 on bug 918221 from Wolfgang Bauer

> Well, talking about the output of "locale", here you go:
> 
> LC_TIME="de_DE.UTF-8"
> LC_COLLATE="de_DE.UTF-8"
> LC_MONETARY="de_DE.UTF-8"
> LC_MESSAGES="de_DE.UTF-8"
> LC_PAPER="de_DE.UTF-8"
> LC_NAME="de_DE.UTF-8"
> LC_ADDRESS="de_DE.UTF-8"
> LC_TELEPHONE="de_DE.UTF-8"
> LC_MEASUREMENT="de_DE.UTF-8"
> LC_IDENTIFICATION="de_DE.UTF-8"
> LC_ALL=

It's exactly the same here...
Except that you're missing LANG, LC_TYPE, and LC_NUMERIC, but I suppose that's
just a mistake and they are set to de_DE.UTF-8 as well, right? ;)

> Yes, after my last post I had a closer look and saw they are only symlinks.
> However, please note there are no symlinks from
> /usr/share/templates/libreoffice/de to /usr/share/templates/ooo/de, so that
> is why I tried to copy (also tried symlinks) the folder, also trying
> different names like de, de-DE or de_DE in order to maybe find out how LO
> handles "locale"-Variables.

Right, there is no /usr/share/templates/ooo/de at all, but that's the same
here, too.

> A real difference to your system seems to be that my systems have been
> updated from 12.3 to 13.1 some time ago, however doing a clean install is
> not an option (at least for now).

True, but then it also works fine on my real 13.2 system, which has been
upgraded all along from 8.1... ;)

> I will also try to remove all packages of libreoffice, try to find and
> remove all possible "leftovers" and see what happens.

Good idea.
Maybe there's some dangling symlink somewhere that causes the problem?
There were such issues with the help files when upgrading from 4.1 to 4.2 or
4.3. (this particular issue fixed itself if you reinstalled or updated
libreoffice though, and should be fixed meanwhile in the 4.3 packages)

In particular I would check/remove /usr/lib/libreoffice,
/usr/lib64/libreoffice, and /usr/share/libreoffice (and of course
/usr/share/templates).