Mobs rally players, but not from Vengeance
[VZ] Valor Zeal – Stormbluff Isle – Looking for steady, casual-friendly NA raiders!
Even if it could appear so in a first glance, there’s no bug.
Those mobs are not real enemies, they are more like “summons” or “infinite spawns”. It’s set that tou can rally by killing them to make that particular room more do-able, but they should not count towards vengeance. Can you imagine achieving “sweet revenge” by killing other rally-able constructs, like death blossoms in TA or crystals in CoF p1?
There should be some method of triggering Vengeance during boss fights and such where there is a need for rallying mobs. As it stands, it becomes utterly useless when you need it most.