With latest gitk on Tumbleweed:

pief@e7450:~> rpm -qf `which gitk`
gitk-2.6.0-1.1.x86_64
pief@e7450:~/some_git_repo> gitk --all
Error in startup script: bad menu entry index "Ansicht bearbeiten ..."
    while executing
".bar.view entryconf [mca "Edit view..."] -state normal"
    invoked from within
"if {$cmdline_files ne {} || $revtreeargs ne {} || $revtreeargscmd ne {}} {
    # create a view for the files/dirs specified on the command line
    se..."
    (file "/usr/bin/gitk" line 12442)

Workaround: LANG=C gitk --all

Cf. http://permalink.gmane.org/gmane.comp.version-control.git/278846
Cf. https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=801784