Preview not showing the same as live view

Topic summary

Main issue: After modifying code to improve banner image resolution in the Dawn (Shopify default) theme, the Featured Products section displays correctly in the theme editor preview but appears stretched edge-to-edge on the live storefront, resulting in blurry images.

Scope and symptoms:

  • Correct layout in backend preview; live site shows stretched layout and degraded image quality.
  • Some report product pages not loading properly on the live site, while preview remains correct.
  • Comparison screenshots are central to illustrating the preview vs live discrepancy.

Timeline and suspected cause:

  • Problems began around Aug 18–19 without any merchant code changes, suggesting a possible Shopify platform update as a trigger.

Impact:

  • Customers are reportedly unable to view or order products on affected stores.

Actions taken:

  • At least one support ticket has been open for over 24 hours.
  • A helper checked whether assistance was still needed; no concrete fix posted.

Status:

  • Unresolved/ongoing. Key open questions: whether a recent Shopify update introduced a bug and what the recommended workaround or patch is.
Summarized with AI on January 21. AI used: gpt-5.

Hello! While using the Dawn theme, I encountered issues with the banner image resolution. After following the code fix here: https://community.shopify.com/topic/1699922 it worked perfectly for the banner. I’m now happy with my banner image resolution.

However, after making those edits, my Featured Products section seems to have an issue. The Featured Products show up correctly on the theme preview, but stretched to the edges of the screen on the live site. See images below. May I know how this can be fixed? Thank you.

Image 1: Preview layout is correctly shown as intended when set to full screen preview

Image 2: Live site shows the layout being stretched to left and right edges, and due to this, the images are blurry as well.

Hello! I wanted to check in and see if you were still facing this issue, and if you still needed help.

I am also having this same issue.

The live version does not reflect what is shown in the preview in backened.

Backend is correct. Live is not.

Any ideas?

I am also having this issue. Product pages are not loading properly on live site (see image attached on the Right), however everything still displays correctly in live view (see image attached on the Left) .

This issue started around the evening of Aug 18 / morning of Aug 19. No code had been changed on our end, it seems that a Shopify update on Aug 18 had caused the issue. We have an open ticket for over 24 hours..

Any help would be greatly appreciated, as customers are unable to view or order products on our website for over a day now.