POS cart items not appearing, but total is correct

[Seb1]

Hello Shopify POS team.

We’re using the new bulk cart API.

Upon adding duplicate items to the cart we’re seeing an error where the cart is not rendering correctly.

Steps:

1. Add variant 123 to cart with UUID: abc
2. Add variant 123 to cart with UUID: def

It is leaving a gap where the line items should be. The total is correct but visually half of the items are missing:

App version: 9.30.0
Build number: 70993
iOS: 18.3.2

It appears to happen if we add items with the same variant ID that already exist in the cart.

Our assumption is that the cart should either automatically group by variant_id or group by the UUID (which it appears to be doing, but just not rendering). Our preference is for UUID grouping which gives more control.

Thanks for your help!

[Victor_Chu]

Hi,

Thank you for bringing this to our attention. Just to clarify, this is happening on both iOS and android? Can you explain the scenario for having the same variant ID but two uuids? When you say “adding” you refer to update existing line items in the current cart correct?

Victor