I'm using koha 3.6.4, and this bug http://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=6802 still open. There is an another version of koha with this bug fixed?

This comment on the bug report is your answer:

This is fixed in master. Is it still a problem is 3.6?

"master" means the latest version in development. Since the comment was as of 2012-03-29 that implies that it is fixed in version 3.8.3. -- Owen -- Web Developer Athens County Public Libraries http://www.myacpl.org