Steps to reproduce the issue

1. Make a Joomla fresh install
2. Create a category "test"
3. Create one article inside that category "article 1"
4. Create a Menu item to list/blog the "test" category
5. Go to the default breadcrumbs module "advanced" tab and disable caching
6. Go to system configuration and turn on system caching "Conservative"
7. Go to frontend and select the "Test" menu item and then the "article 1"
8. You can see the breadcrumb is ok (no caching yet)
9. Refresh the page. You can see the breadcumb is NOT ok (from com_content cache)

Expected result

Breadcrumb should be ok

Atual result

Breadcrumb is not ok

System information

Joomla 3.4.4

Additional comments

If you disable the cache in system configuration is ok, so the problem is related with reading the breadcrumbs from cache.
If you dump the getPathway() function when reading from cache you can see the problem.