monster cant come to the player, and resets and aggro again. maybe here it should mainly use its ranged skill all the time instead if it cant reach the player in other ways, same as the player flying and melee cant follow.
Fixed, in part. Monsters that can't reach you now use a ranged skill if they have one that works on you, instead of resetting. The Ancient Garcikhans' only ranged skill works only on flying players, so they now use it on flyers they can't reach; on the ground they still give up when they can't reach you. The attack through the ceiling is fixed: a monster on a roof no longer hits a player under it. Live after the next server update.
