include+when bug in ansible?

command line

% ansible-playbook pb.yml -i h -e "BOOL=that"

PLAY [all] ********************************************************************

GATHERING FACTS ***************************************************************
ok: [localhost]

TASK: [wtf] *******************************************************************
ok: [localhost] => {
    "msg": "that"
}

PLAY RECAP ********************************************************************
localhost                  : ok=2    changed=0    unreachable=0    failed=0


% ansible --version
ansible 1.4

one.yml

- hosts: all
  tasks:
    - name: wtf
      debug: msg={{ BOOL }}

pb.yml

- include: one.yml
  when: BOOL == "this"