Bug Report

Summary

One-line description of the bug — feature, behaviour, and condition in a single sentence.

Environment

• Browser / OS / Device
• App version / build number / commit SHA
• User role / account type

Steps to Reproduce

1. First action
2. Second action
3. Continue until bug appears…

Expected Behaviour

What should happen according to the specification or reasonable user expectation.

Actual Behaviour

What actually happens. Include console errors, network response bodies, and screenshots where relevant.

Severity

Critical / High / Medium / Low — and a brief justification for the rating.

Attachments

• Screenshot or screen recording
• Console log or error stack trace
• Network HAR file (for API-related bugs)

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Tips: Keep the title under 80 characters. Write steps that any team member can follow independently. Paste error text rather than attaching a screenshot of it — devs can search text.

Bug Report

Summary

Checkout breaks when applying a 100% discount code on Safari.

Environment

• Safari 17.4 / macOS 14.4 / MacBook Pro M2
• v2.18.1 (commit a3f9b2c)
• Logged-in customer

Steps to Reproduce

1. Add any item to cart, go to /checkout
2. Enter promo code FREE100
3. Click "Apply"

Expected Behaviour

Total updates to £0.00 and the place order button enables.

Actual Behaviour

Page hangs approximately 8 seconds, then the console shows:

TypeError: cannot read property 'amount' of null
    at applyDiscount (checkout.js:214)

Order button stays disabled. Network tab shows /api/discount returning HTTP 200, but the response body has discount.applied: false.

Reproduced on Safari 17.4 and Safari 17.3. Does not reproduce on Chrome 124 or Firefox 125.

Severity

High — blocks free trial conversions during an active marketing campaign. Affects any user on Safari who attempts to use the discount code.

Attachments

• safari-checkout-error.png
• console-error-stack.txt
• checkout-flow.har