How do I keep the trail for the breadcrumbs till the specific nodes? When I create a new node and I assign a tag to it, I can view it from the corresponding taxonomy page. The breadcrumbs seem to follow the trail normally

Home&gt;&gt;category&gt;&gt;subcategory


until the very leaf node, at which point it indicates only

Home&gt;&gt;node


Why so? How do I keep the breadcrumb trail from collapsing?
Breadcrumbs can sometimes be a bit confusing. In my experience the breadcrumb never behaves 100% as you would want it to behave, if you use it as it comes 'out of the box'. 

Luckily also other people got annoyed be the standard breadcrumb (mis-)behaviour so over the years a sea of breadcrumb related modules found its way to drupals module collection. Here is an overview / comparison with some 10-15 modules listed. Maybe Breadcrumbs by Path could suit your needs…