I'm currently working in a web application project with multiple environments for testing, and we need to give support to all browsers.
So when a 'defect' is iddentifyed by someone, we make sure we know all the previous constraints to solve it quicker.

One of these days, this "tester" comes to us:

Tester: There is a deffect in this X screen.
IT: Ok. Can you tell me what browser you were using in the test?

Tester: The same as you. "H T T P : / / localhost:8080"

:D