Even talented e-commerce development teams regularly launch features that accidentally degrade performance. This rarely happens due to poor coding skills—it happens due to process flaws.
1. QAing for appearance instead of hypothesis
Most Quality Assurance routines test if a page visually matches a Figma design file across desktop and mobile screens. They neglect to test whether tracking scripts fire properly, if checkout logic breaks under edge-case discounts, or if custom Shopify app scripts slow down page render speeds.
2. Unchecked Shopify app sprawl
Adding multiple third-party apps for small frontend features introduces JavaScript bloat and tag conflicts. Before installing an app, always evaluate whether the feature can be built natively into your theme architecture.
