weird, I thought this was it but now I canāt find the state of category breadcrumb you describe, I might have misunderstood/be mistaken 
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Is the screenshot, where ātodas las categoriasā and ātodasā both appear in the breadcrumbs, an actual page, and if so, what is its url ? foro0.com/ ?
Considering this topic: Category pulldown search does not show subcategories , it might not be a good UI idea, as you would have too much subcategories in the dropdown, without any category selected, also the search feature of the category dropdown does include the subcategories.