During process of development of this module, I realized that default drupal breadcrumb builder (PathBasedBreadcrumbBuilder) was playing tricks on our module, caching URLs that are not well resolved with our system (to have more details of this bug please call @ppalomera).

For this reason we need to reimplement Breadcrumb Builder. At this moment there is an empty class that is doing nothing with Breadcrumbs: AliasSubpathsBreadcrumbBuilder.

It is needed to develop build() function to have Breadcrumbs in our page. Please be careful with cache issues!