The Bugbear's Surprise Attack feature reads:
Surprise Attack: If the bugbear surprises a creature and hits it with an attack during the first round of combat, the target takes an extra 7 (2d6) damage from the attack.
Is it referring to the bugbear's first round of combat or the players'?
My players were clearing Cragmaw Castle in LMoP. They were in a long combat that went from room to room, then entered another room and got surprised by a bugbear. I wasn't sure if this triggered the surprise attack or not...
I assume it doesn't trigger and it's meant as if the Bugbear ambushes an unaware party, but I'd like to be sure.