Bruce follows Zerxus far enough to have a good view of the window and balcony outside it, but he does not continue to follow him after that warning and he sure as hell doesn't sit down.

He just waits those moments and when the Griffon comes in.

Then slowly turns his eyes to his warden, and equally slowly lifts his eyebrows.

"really."

Well he's not about to melt into violence anymore, at least.