Report Type,Sample Bug Report Project,Svassan E-Commerce Platform Status,Representative redacted sample Bug ID,BUG-031 Title,Checkout total differs from cart total after delivery slot change Severity,High Priority,P1 Status,Open Environment,Staging; Chrome 126 Steps to Reproduce,1. Add a discounted item; 2. Open cart; 3. Change delivery slot; 4. Continue to payment Expected Result,Checkout total matches cart total and applies delivery fee once Actual Result,Delivery fee is recalculated twice after the slot changes Business Impact,Customer may be charged an incorrect amount and abandon checkout Evidence,Screenshot; network trace; cart and checkout totals Suggested Validation,Repeat with discount code; multiple delivery slots; mobile viewport