Entity and config.entity not working as expected

[luixal]

The problem

When using jinja templates and according to the docs, entity variable should be used rather than config.entity. As seen in the Jinja Templates section in the docs:

entity - the entity_id from the current entity row configuration. **This must be used instead of config.entity for the template to automatically update**.

This actually works, but doesn't update on attribute's changes:

  - type: custom:paper-buttons-row
    buttons:
      - entity: light.main_room
        layout: icon_name
        name: "{{ state_attr(config.entity, 'duration') }}: "
        state: "{{ states(config.entity) | title }}"

but this doesn't (entity's name is shown):

  - type: custom:paper-buttons-row
    buttons:
      - entity: light.main_room
        layout: icon_name
        name: "{{ state_attr(entity, 'duration') }}: "
        state: "{{ states(config.entity) | title }}"

BTW: It would be great to be able to use javascript templates :)

What version of Paper Buttons Row has the issue?

2.1.3

What version of Home Assistant are you running?

Home Assistant 2023.04.1

What version of the Frontend are you running?

20230411.1 - latest

Example YAML snippet

See above.

Anything in the logs that might be useful for us?

I don't think so.

Additional information

No response