CSS from previous page is duplicate on next page

I have a problematic thing in F7 V4.

When i navigate to another page using router navigate, the CSS i had in previous component page in script section (not the template one) is duplicated in the target page. I expect not to find css of previous rule in new page.

What’s happening is it a bug ?

Use scoped styles https://framework7.io/docs/router-component.html#scoped-styles