vanish doesn't enter you into improved stealth - you can be re-aggroed

[escape-everyst]

vanish issue: during the non-reveal moments in vanish you don't enter an improved stealth and are revealed(mob will re-aggro if they are near)

tldr: it does drop aggro but it doesn't safeguard you from nearby npcs seeing you

[padawan155]

https://forum.elysium-project.org/topic/33188-please-fix-vanish/