Hi,
I think you have a product listing module which display all products in category and sub categories.
At this moment, the breadcrumbs won't be able to determine the patch you're coming from, because in the first category you'll be able to access all products.
Regards,
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.