Non-Legacy (v2) Smart Cart Errors

We're aware that some merchants using non-legacy Smart Cart are experiencing loading issues and the native cart is loading instead. Our team is actively investigating the cause and working on a fix. We'll share an update as soon as we know more.

We are continuing to investigate this issue.

Error rates have dropped and Smart Cart loading appears to be functioning normally again. We're monitoring for for stability.

This incident is now closed. The loading issue affecting non-legacy Smart Cart has been resolved, and we've confirmed stability over the monitoring period. If you continue to see any issues, please reach out and we'll take a look right away.

Incident Date: July 7, 2026

Duration: Approximately 45 minutes

Status: Resolved

## Summary

On July 7, a routine script update briefly caused Smart Cart to fail to open for a portion of shoppers on some stores. The issue was regional and intermittent rather than a full outage, and normal service was restored within about 45 minutes.

## What Happened

During a routine deploy, a small subset of shoppers loaded a mismatched pair of script files depending on their location and timing. This caused the cart to not initialize for them. Once identified, we rolled back the change and confirmed carts were opening normally again.

## Resolution

We shipped a safeguard the next day to prevent this specific scenario from affecting shoppers going forward, and we're rolling out a longer-term update to how these files are versioned to close this out completely.