php - Drupal 8 breadcrumb and books -

i have taxonomy term name "category" , url:

category 

i have created simple page "test" tag, , url page is:

/category/test 

because there prefix /category path, breadcrumb shows:

home / category 

category linked taxonomy term. works charm. problem when create book page. category tag disappear breadcrump. how can keep breadcrumb based on path of taxonomy term books?