You opened your store, looked at a collection or product page, and saw something like Home > Men > Men > T-Shirts. Or a category in the trail that you deleted last week.
TL;DR - run Refresh Categories and read the Advisor
Open Breadcrumbs Uncomplicated or Categories Uncomplicated in your Shopify admin and click Refresh Categories. Every refresh runs a fresh analysis of your menu structure, and the Category Advisor below the button lists any issues it finds with a specific next step for each one. Repeating breadcrumb labels almost always trace back to an Advisor warning that hasn’t been addressed yet.
The warnings that cause repeats
Create a unique collection for every category
“If you link to the exact same collection from two different menu items (categories), there’s no way to tell them apart.”
Two menu items pointing at the same Shopify collection look distinct in your menu tree but resolve to the same URL. A product in that collection has two valid breadcrumb trails, and you may see the same name appear at different levels of the trail.
Next step: the Advisor lists the duplicated URLs. In Shopify admin go to Products > Collections > Create collection, then update one of the menu items in Online Store > Navigation to link to the new collection. Refresh Categories to confirm.
Review recursion warnings
“If a linked menu item points back at a parent, grand-parent or ancestor category, you get an infinite loop: A > B > C > A > B > …forever.”
This is the warning behind the most visible repeating breadcrumb - the same names appear over and over in the trail.
Next step: the Advisor lists the recursive loops. In Online Store > Navigation, rename the offending menu items so no title is reused at a level above or below where it already appears.
When the Advisor is clean
If the Advisor reports no warnings and Refresh Categories has run cleanly but you still see odd breadcrumb behaviour, the cause is in territory that the Advisor doesn’t cover:
- a product in multiple collections - see the original multi-collection post;
- a short-form
/products/xURL with no collection context - also covered there; - the wrong Top-level category selected - see Switching which menu drives your breadcrumbs.
Summary
Repeating breadcrumb labels almost always trace back to a Category Advisor warning - two menu items linking to the same collection, or a recursive loop in your menu tree. The Advisor shows you which one and tells you the next step. The fix is to act on the warning, not to work around the symptom.