Shopify's Recent CMS Upgrade Broke Structured Data Functionality

Shopify Discussion

Topic summary

A Shopify merchant reports that a recent CMS upgrade introduced a critical bug affecting custom structured data in blog posts.

The Issue:

  • Custom structured data (HTML code placed at the top of articles) is automatically deleted whenever blog posts are edited
  • This occurs even with unsaved changes
  • The problem began after Shopify’s latest CMS update

Impact:

  • Makes the blog editing functionality nearly unusable for stores relying on structured data for SEO and traffic
  • Particularly affects merchants who publish high volumes of blog content

Current Status:

  • Shopify Support has been unable to resolve the issue
  • The merchant expresses frustration about lack of direct access to technical support and inadequate quality assurance testing before the CMS rollout
  • The issue remains unresolved and awaits attention from Shopify’s technical team
Summarized with AI on November 2. AI used: claude-sonnet-4-5-20250929.
1

I’m posting this here because Shopify Support has not been able to resolve my situation, and this massive bug makes the online store unusable for those (like us) who rely heavily on blog posts to drive traffic.

We have custom structured data in the HTML at the top of all of our articles.

Everything used to work perfectly fine until Shopify’s new CMS “upgrade.”

Now, any changes to blog posts, even unsaved changes, automatically delete structured data.

This is a MASSIVE bug an inefficiency that makes blog article editing nearly unusable for store owners who have structured data in all of their articles.

It really frustrates me that there’s no way to directly reach someone on the technical support team, and Shopify wastes all of this time and energy on flashy graphics about “Winter Upgrades,” while failing to perform basic QA that could prevent massive bug rollouts.

Hopefully someone on the Shopify team can fix this bug and restore usability to the CMS for our team and many other Shopify store owners that publish a large number of blog posts.