Cart quantity change duplicates items or free gifts
Changing an item's quantity in a Shopify cart adds a duplicate line or free gift instead of updating the existing entry, across several cart apps.
Tier I · Proven The best-established problems.
5 public reports · first reported 13 September 2023 · last reported 30 August 2026
What's going wrong
Merchants using several Shopify cart drawer, cart page, upsell and free-gift apps report that changing an item's quantity adds a second line or a second free gift instead of updating the existing entry.
AI-assisted: written with the help of AI from the reports. The idea report has the full summary.
In the idea report
- The full summary.
- The products the 5 reports are about, and how many came each month.
- Related problems.
No business has been found with this problem yet, so the report has no contacts. All sales are final — no refunds. Pricing.