password bug?

I installed 8.0 about a month ago. The password i wanted to use had 9 characters and the install defaults to 8. I entered the first eight characters and later ran yast to enable 15 character passwords. I also checked all 3 boxes above the password length dialog boxes (md5 or something like that). I changed my password to the 9 character version. Now I can login with either the 8 or the 9 character password.