Page attribute's template (full width) not working

Hi,
First of all, thank you for creating such a lovely template, I really like this.

There is one issue about Full Width on pages.
I would like to show it full width, but Except the top page, they don’t seemto be working.

Page attribute’s template is simply not working.
Even if I choose ‘Default’ or ‘Full Width’ (also Full width without title), it doesn’t seem to be affected.
I still see outline on a page.

Is there a way to make template effective?

Thank you very much for your assistance.
Best wishes,