After upgrade from 1.563 to 1.572, all my Jenkins userid in Uppercase are no longer visible and cannot log in (eg : userid like UL11244) . I can see only user in lowercase (admin). I use Jenkins own database.
As a workaround, I have to rename directory in JENKINS_HOME/users folder, eg:
mv /build/hudson/users/UL11251 /build/hudson/users/ul11251 and then modify config.xml to find and replace all UL11251 in ul11251.
In this case user ul11251 can log in and work.
But since I have lot of users, I have to rollback to 1.563.
Thanks