Understanding register css in theme

[Germanico]

Prestashop: 8.1.7

Despite prestashop documentation addresing theme registration of css, I not got this working.

This is my theme.yml, on my child theme, with classic as parent:

assets:
  use_parent_assets: false
  css:
    all:
      - id: custom-styles
      path: assets/css/styles.css
      media: all
      priority: 100

But despite being clearing cache in backoffice and deleting files in var/cache, the assets css is not loading.

In other side, [my theme]/assets/css/theme.css  does load by default, despite not being registered on theme.yml

Thank for your help.

[Germanico]

For those in this same situation.
I fix the problem.
Just switch theme for default theme (classic), and switch on again your child theme.
Seems like prestashop only detect changes on theme.yml when switch on.

[Divine]

Thanks for your feedback. Don't forget to edit your first post and add [solved] in the title