Product Pages Not Displaying Correctly on Custom Shopify Theme

Shopify Discussion

Topic summary

A user reports product pages not rendering correctly on their custom Shopify theme, with issues particularly affecting mobile devices and certain browsers. The layout breaks or content fails to load properly.

Potential causes identified:

  • Broken HTML in product content editor when creating products
  • Theme-specific HTML rendering issues (not present in default themes like Dawn)
  • Improperly escaped special characters in product options (e.g., quotation marks in measurements like 6")
  • Malformed HTML in product descriptions

Recommended troubleshooting steps:

  • Share a specific product URL for diagnosis
  • Test the same products using Dawn theme to isolate theme-related issues
  • Update the theme to latest version
  • Verify product information for HTML errors
  • Test across multiple browsers and devices
  • Consider switching to a free Shopify theme temporarily

The discussion remains open, awaiting the original poster to provide a preview URL or specific product page for more targeted assistance.

Summarized with AI on October 27. AI used: claude-sonnet-4-5-20250929.
1

Hi everyone,
I’ve been running into an issue after setting up my website with Shopify using a custom theme. Some of the product pages aren’t rendering correctly — either the layout breaks or the content doesn’t load as expected, especially on mobile or certain browsers. Has anyone faced something similar? Could it be a theme compatibility problem, or is there something else I should check?
Any insights or solutions would be greatly appreciated. Thanks in advance!

2

Hello @leon1aq ,

If everything is fine in your custom theme then maybe there is a chance that while creating a product when you enter the content in the editor, you are using broken html which causes issues in the specific product pages.

Can you share a product URL which is not rendering correctly ?

Regards
Guleria

3

Does it show fine in Dawn?

Custom theme may have some broken HTML. It may even happen for some products, but not others.

Say a product option is length and one of the values is 6 inches, but written like 6"

Theme may not escape this properly and output something like:

<input type=“radio” value=“6"”> - which is a broken HTML.

Product description may have some broken HTML.

These are just guesses, share a preview url to your new theme for better answers.

4

Hi,

Hope this will help

  • Update your theme & check your product info.
  • Test on different browsers & devices.
  • Try free Shopify theme