Since a patch from 12 Oct (http://dev.splitbrain.org/darcsweb/darcsweb.cgi?r=dokuwiki;a=filediff;h=20081012170133-7ad00-6f9ddb04e9c00341691b2339c3aedfa79e59d565.gz;f=inc/toolbar.php) the Greek letters in the char picker are broken.
(The patch names a wrong bug number, the correct bug is
FS#1429.)