fixup! Agregar los helpers de Devise también

app/controllers/application_controller.rb

@@ -71,9 +71,7 @@ class ApplicationController < ActionController::Base
     end
 
     # Necesario para los breadcrumbs.
-    [Loaf::ViewExtensions, Devise::Controllers::UrlHelpers].each do |helper_module|
-      ActionView::Base.include helper_module unless ActionView::Base.included_modules.include? helper_module
-    end
+    ActionView::Base.include Loaf::ViewExtensions unless ActionView::Base.included_modules.include? Loaf::ViewExtensions
 
     breadcrumb current_usuarie.email, main_app.edit_usuarie_registration_path
     breadcrumb 'sites.index', main_app.sites_path, match: :exact

app/views/layouts/_breadcrumb.haml

@@ -12,7 +12,7 @@
           - else
             %span.line-clamp-1= link_to crumb.name, crumb.url
 
-  - if current_usuarie
+  - if @current_usuarie || current_usuarie
     %ul.navbar-nav
       - if @site&.tienda?
         %li.nav-item