Hunters no longer get stuck or melee large bosses (e.g. Ossirian). Hunters without aggro that are too close now step back and use their bow. Hunters with aggro will NOT move, so they can’t pull extra mobs.
Hunter movement was disabled a few weeks after release because players complained about hunters pulling random mobs in raids, and it stayed off for years since hunter bots weren’t used much. Side effect: hunters too close to a target had no way to move out, so they stood frozen or ran into melee. If you run into any issues, please report them on the bugtracker.