openvswitch-switch: is /var/lib/openvswitch supposed to be cleaned on package purge?

ovsdb-server uses /etc/openvswitch/conf.db that is a link to /var/lib/openvswitch/conf.db.

When the package is removed and purged, /etc/openvswitch/ is cleaned but /var/lib/openvswitch/ is not.

Consecutive installation of previously purged package starts ovsdb-server with database that contains data from the previous installation.