[Drustvar] Vehicle bugged: "Culling the Coven" & "The Murderous Matron"

[haruvion]

WoW Freakz link: https://www.wow-freakz.com/quest_helper.php?quest=48524&name=culling-the-coven (Culling the Coven)
https://www.wow-freakz.com/quest_helper.php?quest=48523&name=the-murderous-matron (The Murderous Matron)
Character name: Haruvion
Bug description: Two quests "Culling the Coven" and "The Murderous Matron" in Timbered Strand (Drustvar, BfA xpac) has an element that is bugged which causes the quests to be almost impossible to complete. The quests requires the player to use a "Dormant Ravager" as a vehicle.

The bug is that the vehicle's (i.e. Dormant Ravager) abilities causes damage to the player while in operation. The vehicle also auto-walks to mobs as if it is an npc; movement is uncontrollable once combat starts, but abilities can still be used.
Proof: https://www.youtube.com/watch?v=bkhxlR8TsOQ (Culling the Coven)
https://www.youtube.com/watch?v=SOi0jUrrYfc (The Murderous Matron)