CREATE ROLE blocked by password validation plugin

Apparently, CREATE ROLE is blocked when using a password validation plugin. It's not clear why this should be the case, or how to avoid this, as there is no way to provide a password when creating a role.

> install soname 'simple_password_check';

Query OK, 0 rows affected (0.00 sec)

> create role 'myrole';

ERROR 1819 (HY000): Your password does not satisfy the current policy requirements