48-Hour Field Notes: My Race Condition Vanished on a Free Server — It Was Just Slower

A developer experienced a race condition that vanished after moving a flaky test from a laptop to a remote server, proving that timing-sensitive bug failure rates depend on the environment. Separately, a latency panel showed healthy p95 metrics despite a slow export screen. This occurred because the dashboard reported service-wide averages rather than screen-specific data, leading to initial confusion before the developer identified the distinction between global service health and individual screen performance.