Astra version 1.8.0 introduces breadcrumbs that can be added from within a theme.
The Page header module of the Astra Pro addon already adds breadcrumbs. The ones that you already have will follow the previous way. However, the ones you add now on will follow the recent Breadcrumb trail.
If you want to switch from the existing breadcrumb to the new trail, you can use the following filter.
add_filter( 'astra_addon_advanced_headers_use_astra_breadcrumb_trail', '__return_true' );
Add this code to the child theme』s functions.php file.