Pool is changed when Ansible playbook is played again

When I add a Pool in my BIG-IP by the mean of Ansible module big_ip, the pool is correctly defined. Fine!

But when I play the task again, the pool is signaled as

changed

(in the Ansible stdout

PLAY RECAP

). It shoudn't because nothing was changed.

This occurs only when I define the

monitor

option for the pool in the task:

monitor_type: and_list
monitors: http

Whan I don't define a

monitor

option then I can play the taks again and the pool in seen as unchanged, as expected.

1. Is it a normal behavior?
2. What could I do to avoid it?

I need to see only the real changes in the PLAY RECAP because some handlers are triggered by changes.

Thank you for your help 🙂