You Fixed One Bug and Broke Three Others

🧠 Dev Motivation — August 8, 2026

You Fixed One Bug and Broke Three Others

It started simple: a silent 10MB upload timeout. Five minutes to patch the middleware from returning 200 to 413. You merge it. Three hours later, the mobile app is getting 413 errors on profile photos because your "correct" fix counted multipart overhead differently. Rollback. The monitoring goes green.

Here's what nobody tells you: every bug fix is a negotiation with the rest of the system. The bug wasn't just the middleware — it was that three parts of the system had evolved silent workarounds around broken behavior.

Before you fix, map the blast radius. A quick git grep for the function, error type, and status code saves five hours of rollback-and-debug.

Write tests for the broken behavior before you fix it. That test is cheaper than the PagerDuty alert.

The regression is not a punishment — it's data. The system is revealing dependencies you didn't know existed. That's valuable.

"A bug fix that doesn't have a test is just a promise you'll forget you made."

The developer who never breaks anything when they fix something is the developer who never touches where the real problems live. You revealed complexity — that's how it gets resolved.