Skip to main content
News | The 2026 Buyers Guide to E-Commerce QA
Read More

Bug Book Library

The bugs that
we caught in time.

A library of real production bugs caught by Spur on live sites before reaching users, with full forensic details: test, failure step, screenshot, and cost.

Discover

All
AI Feature Error
Checkout
Copy
Interactions
Payment
Persona
Pricing
UI/UX
>
Severity
Agent

Checkout

Mild

Functional Testing

Spur caught a pound sign showing up on a cart page for German shoppers
Read the bug report

Checkout Interactions

High

Exploratory Testing

Spur caught a product page displaying tote bag reviews instead of hat reviews
Read the bug report

Checkout Persona

Critical

Exploratory Testing

Spur found a meal selection page stuck on a loading screen mid-checkout
Read the bug report

Interactions

Critical

Exploratory Testing

Spur found a broken Best Sellers link sending shoppers to a 404 page
Read the bug report

Site Merchandising

Mild

Exploratory Testing

Spur spotted a shoe page recommending backpacks, hats and travel bags instead of shoes
Read the bug report

Pricing

Medium

Functional Testing

Spur caught a price sorting using original prices instead of actual sale prices
Read the bug report

Checkout

Mild

Functional Testing

Spur spotted a pickup-only item sitting under the "Items to be Shipped" header in the cart
Read the bug report

Site Merchandising

Medium

Exploratory Testing

Spur found a "Fit" accordion filled with materials and sustainability info
Read the bug report

UI/UX

Mild

UI/UX Testing

Spur flagged three subtle issues on product pages
Read the bug report

Checkout

Critical

Functional Testing

Spur caught an Add to Cart button blocking every purchase
Read the bug report

Checkout

Critical

Functional Testing

Spur caught a checkout showing guests $250 less than the actual booking total
Read the bug report

Payment

Medium

Functional Testing

Spur spotted a $100 e-gift card showing Afterpay installments of $250 each instead of $25!
Read the bug report

UI/UX

High

Functional Testing

Spur caught raw template code showing up on a subscription plan page
Read the bug report

Accessibility

Mild

Functional Testing

Spur noticed the cart image for a women's sock was labelled as a men's product in the alt text
Read the bug report

AI Feature Error

High

AI Feature Testing

Spur found a search engine serving cleaning kits when customers looked for gaming consoles
Read the bug report

UI/UX

High

Exploratory Testing

Spur caught a rewards app showing members double their actual redemption limit
Read the bug report

Copy Payment

Critical

Exploratory Testing

Spur caught a mismatched review on a shorts PDP
Read the bug report

UI/UX

High

UI/UX Testing

Spur flagged four UI issues on a Brazilian pricing page in a single pass
Read the bug report

Interactions

High

Functional Testing

Spur found that favorited items were vanishing before shoppers could come back to them
Read the bug report

Copy

High

Localization

Spur flagged Dutch step labels on the French checkout
Read the bug report

Checkout

Critical

Functional Testing

Spur caught a checkout screen showing "undefined" where the delivery date should be
Read the bug report

Pricing Checkout

Critical

Functional Testing

Spur flagged a discount validation error at checkout
Read the bug report

Checkout UI/UX

Critical

Exploratory Testing

Spur found a checkout button crashing every purchase attempt with an error
Read the bug report

AI Feature Error

Critical

AI Feature Testing

Spur caught the AI concierge going silent mid-conversation
Read the bug report

Checkout Interactions

High

AI Feature Testing

Spur found that selecting “Afternoon” in ticket booking continued to show morning time slots
Read the bug report

Interactions AI Feature Error

Medium

AI Feature Testing

Spur caught the AI chatbot replying in English instead of French
Read the bug report