The Browser Test Passed. The Product Still Broke.
A browser test can click the right button, see the expected confirmation message, and still tell you almost nothing about whether the feature is safe to release.
That sounds dramatic until you look at where frontend bugs actually live now.
They live between domains during an SSO redirect. They appear after a service worker wakes up with stale data. They depend on whether the browser restored a previous session, pre-filled a password, denied clipboard access, or briefly rendered a loading skeleton before the final component appeared.
And increasingly, they show up inside features whose output is not completely deterministic: AI search, inline suggestions, chatbots, query rewriting, and generated form content.
