A playbook to demonstrate an Ansible bug

playbook.yml

---
- name: Simple playbook for Ubuntu 20 container
  hosts: all
  gather_facts: false

  pre_tasks:
    - name: Install Python if not present
      raw: 'test -e /usr/bin/python3 || (apt -y update && apt install -y python3)'
      register: ansible_install_python_result
      changed_when: ansible_install_python_result.stdout

    - name: Gather facts (setup module)
      setup:
        gather_timeout: 60

  tasks:
    - name: Clean cache (apt)
      ansible.builtin.apt:
        clean: true
      changed_when: false
      when: ansible_pkg_mgr == "apt"