wait_for stopped working in 2.1.0.0 ?

[Kai]

Hello!

I have a playbook which worked well in ansbile 2.0 . After upgrading to
2.1.0.0 a wait_for (port) times out although the port is up and even
returns nice HTML pages.
Does anyone know of any changes to wait_for between 2.0 and 2.1?
The control machine is a CentOS 6.8 and the tasks that fails looks like
this:
--------------------
- name: wait for availability ...
wait_for: host={{ myhash.address }} port={{ myhash.port }}
connect_timeout=10 delay=10 state=started timeout=100
--------------------
(NB: before you ask if the used variables hold correct values: it worked
before the ansible-upgrade ;) )

Cheers, Kai