At one job, when we moved into a new building, we very deliberately located the QA for our team an aisle or two away from the devs. When they said, "It did this", we would just walk over and say "Show me". That was often very enlightening. "Oh, I see, the step that you didn't write down in the bug report is..."

On the other side of the same floor would have been far enough to change the dynamic. And the building was not that big.