[Ranylyn]

It has worked this way since the day Entangle Trap and Marked Targer were implemented, and every single trap in the game always triggers when something enters the radius, not when it reaches the center. Even before this was added, similar behavior was exhibited when an Archer/Rogue pulled targets into Rogue traps, or even when anything else that can move a target did so (Repel, Bash, Forced Move, Hirakuzi, Staff of Warding, Heavy Tackle, etc.) I really don't see the point to add specific behavior for this one particular interaction.