Have seen this problem on MariaDB and Percona Server 5.6
5.6:
https://github.com/georgelorchpercona/percona-server/tree/ps-5.6-DB-233
http://jenkins.percona.com/job/percona-server-5.6-param/1124/
https://github.com/percona/percona-server/pull/474
5.7:
https://github.com/georgelorchpercona/percona-server/tree/ps-5.7-DB-233
http://jenkins.percona.com/view/5.7/job/mysql-5.7-param/149/
https://github.com/percona/percona-server/pull/475