Found a bug, reported it to the maintainer.
He then tells me to ignore it since no one noticed it (besides me).
I tell him i can't do it since it's just wrong and he can simply fix it.
Turns out he's just lazy as hell and got mad at me, so i go and fix it.
Next day boss is mad at me because i'm wasting time on tasks that it's not of my concern even knowing all my tasks were completed.
Not even a "thank you by the way".
What did i miss here?