Thank you for reporting. Could you please try to change these lines in the blueprint and see if it works?
- platform: event
event_type: '{{ event_type }}'
event_data:
device_id: !input 'remote'
- platform: event
event_type: zha_event
event_data:
device_id: !input 'remote'
Maybe the issue is that the template is not rendered at all, with the result of the trigger being invalid.