Changed behavior with Serial?

No not the podcast. Ha.

Anyway, according to this page:

https://docs.ansible.com/ansible/playbooks_delegation.html#maximum-failure-percentage

Serial should continue on until it has attempted every single host. I’ve got a situation where the first batch all fails (due a known inventory issue – were working on it :(), and Ansible stops execution instead of rolling through the remaining hosts.

Has the behavior of serial changed, or is this a bug?

Thanks guys!