When customers want to purchase more than one item - the items dissapear from the checkout cart

Topic summary

  • Issue: Adding a second product to the cart clears all items, preventing multi-item purchases.
  • Theme/Context: Shopify store using the Sense theme; behavior works in Theme Editor (customization mode) but fails on the live storefront.
  • Reproducibility: Occurs across browsers (Firefox/Mozilla, Safari, Chrome) and devices (mobile and desktop), indicating a consistent, environment-wide issue.
  • Scope/Link: Affects www.photobottega.com.
  • Impact: Customers cannot complete orders with more than one item, directly harming checkout and sales.
  • Evidence/Assets: No code snippets or screenshots provided.
  • Status: No workaround or fix identified; the author is seeking community assistance. Discussion remains open with no confirmed cause or resolution.
Summarized with AI on January 21. AI used: gpt-5.

Hello Shopify Community,

I need your help. I have the problem when customers want to purchase more than one item, the cart becomes empty. As soon as they put another item, everything disappears. I am using the Sense Theme. In customization mode everything works fine. I tried it even across all web browsers like Mozilla, Safari and Chrome (Mobile and Desktop). Check out the mentioned webshop: www.photobottega.com

Maybe someone has an answers to this issue.

Thanks in advance.

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