Handling breadcrumbs at tag menu
When we create a menu item to the aggregation tag, and we visit such link, the breadcrumb is created in following way:
Home - menu item name - Entries tagged with 'tag name'
We got additional regular page name after our menu item pointing to this tag. The last element shouldn't appear.
Also When we click at 'menu item name' in breadcrumb looks like: site/menu-item-alias/in,tag-name