When you are very busy and got a tight schedule but some other team complains to their boss that your changes to a shared library completely broke their work and that is a "showstopper". They say it worked before so it must be their code.

So you try to figure out what happened because you sometimes make mistakes even though you took precautions. It takes almost 3 days of your time because you dive into your commits and into their messy codebase.

Turns out the fucking thing never worked in the first place and nobody took the time to validate this. Worst thing is I found the bug with someone else even though it's not even my job to do it. I wasted my fucking time.

I swear if I was not working remote I would have started a fistfight in the office.