[Python] ansible ansible_python_interpreter_fallback not working

I have a playbook with a mix of connection: local tasks and remote tasks that use an AWS dynamic inventory. The python interpreter has different paths on local and remote systems.

Through another question python3 venv - how to sync ansible_python_interpreter for playbooks that mix connection:local and target system I have determined I should use ansible_python_interpreter_fallback to configure 2 python interpreter paths to try. But I cannot get them working. I have tried:

Playbook:

---

- hosts: tag_group_web_servers
vars_files:
- group_vars/au
roles:
- autodeploy
vars:
ansible_python_interpreter_fallback:
- /Users/jd/projects/mgr2/ansible/bin/python3
- /usr/bin/python3


(ignored)

Dynamic inventory:

plugin: aws_ec2
regions:
- ap-southeast-2
- us-east-1
hostnames:
- ip-address
keyed_groups:
- prefix: "tag"
key: tags
- prefix: "group"
key: tags
- prefix: "security_groups"
key: 'security_groups|json_query("[].group_name")'
all:
hosts:
127.0.0.1:
ansible_connection: local
ansible_python_interpreter: "/Users/jd/projects/mgr2/ansible/bin/python3"
remote:
ansible_host: remote.host.ip
ansible_python_interpreter: /usr/bin/python3
ansible_python_interpreter_fallback:
- /Users/jd/projects/mgr2/ansible/bin/python3
- /usr/bin/python3


(ignored)

I'm confused where else this can go or why it doesn't work. Ansible version is here:

ansible [core 2.17.4]
config file = /Users/jd/projects/mgr2/ansible/ansible.cfg
configured module search path = ['/Users/jd/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
ansible python module location = /opt/homebrew/lib/python3.11/site-packages/ansible
ansible collection location = /Users/jd/.ansible/collections:/usr/share/ansible/collections
executable location = /opt/homebrew/bin/ansible
python version = 3.11.10 (main, Sep 7 2024, 01:03:31) [Clang 15.0.0 (clang-1500.3.9.4)] (/opt/homebrew/opt/python@3.11/bin/python3.11)
jinja version = 3.1.4
libyaml = True

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