Related products vanishing on some product pages - Studio Theme

Topic summary

Issue: After customizing CSS for a Size Guide pop-up link in the Shopify Studio theme, the “related products” section vanishes on some product pages.

Scope/impact: Affects t-shirts and hoodies; hats still display related products.

Evidence: Example links provided—hats page shows related products; t-shirt page does not (URLs included in the post).

Suspected cause: The recent CSS change, but the selective impact (only certain product types) is unclear to the poster.

Request: Seeking tips/help to diagnose why related products disappear on some items and how to fix it.

Status: No solution or follow-up yet; issue remains open.

Summarized with AI on December 13. AI used: gpt-5.

Hi everyone,

I’m using the Studio theme.

After editing the css code to customise the pop up link for the Size Guide in my product pages, the related products started disappearing for some products only (t-shirts and hoodies) and remained there for other products (hats).

Related products still there (hats product page): https://victoriayww.myshopify.com/products/jiufen-cat-bucket-hat

Related products disappeared (t-shirts and hoodies product page): https://victoriayww.myshopify.com/products/jiufen-cat-unisex-t-shirt

I suspected my css code might have messed things up, but I don’t understand why the related products is only gone for some products and not all products.

Any tips and help on this would be appreciated. Thank you!