I'm really sorry, but you're fundamentally wrong in how the Breadcrumbs system in Joomla is meant to work!
Page Title is NOT required for Breadcrumbs to be displayed - instead Page Title displays the title of the page under the site / page header. Joomla describes the option as: "Enable this option show page title after just below the header."
Breadcrumbs are INDEPENDENT of that setting and should work completely seperately! I see that if I turn Page Title ON for my EasyStore page, then that causes your implementation of Breadcrumbs to work correctly <<within>> the EasyStore page, but NO WHERE ELSE in the site.
Turning on Page Title for other pages also makes the breadcrumb show up, but ALSO the page title, as Joomla intended the function to work.
This INCONSISTENCY is NOT helpful, NOT well designed and NOT how I want my site to work.
Please re-code your template / breadcrumbs installation / EasyStore as necessary to restore the expected Joomla functionality.
Site login details are the same as in my other support requests today, so you already have them!