POS Extension (bug): Cart subscription does not accurately reflect the current items in the cart

Extensions
1

This seems to happen when the device goes to sleep (and there are items in the cart), and the Shopify POS app is reopened (or just closing and reopening the app), the Subscription POS Tile does accurately reflect the current state of the items in the cart.

This is occurring for our POS Extension for Subscriptions. We subscribe to cart changes based on the Shopify tutorial for POS Subscriptions. In fact, the Shopify POS Subscription extension has the exact same issue.

To fix it, an item needs to be removed/added from the cart, and then the Tile correctly updates.

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Package versions:

 "@shopify/ui-extensions": "2025.10.x",

 "@preact/signals": "^2.3.x",

 "preact": "^10.10.x"

API version: 2025-10

To Reproduce:

Have an eligible subscription item in the cart. Close the Shopify POS app fully. Reopen the Shopify POS app.

2

More info: It is not just a Tile issue. Even if I add a check for the Modal component and subscribe to the cart, it still does not recognize items in the cart. I believe the issue is with the cart subscription/object/api.

3

I updated to the latest Shopify iOS version and I cannot replicate it. Still occurs on Android though.