V15 Boss Bug "Echo of Sylvanas" NPC=54123

[Jivani19]

Class: Paladin
Race: Human Male
Faction: Alliance
Level: 85
Bug: Boss Bug "Echo of Sylvanas"
NPC iD: 54123
Localisation: Dungeon "End Time"
Mapd ID: 938
Zone: 5789
Area: 5790
URL: https://www.wowhead.com/npc=54123/echo-of-sylvanas

Video:

2022-05-19 14-44-17

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Sylvanas from time to time in her ghoul chain summoning phase teleports off the map and cannot be killed, this buggy mechanic repeats itself in a loop until all players die.
The buggy mechanic blocks the entire dungeon.

 

[Greymane]

I was unable to reproduce it, but added some fail-safes to the code, just in case.

 

[ExO]

(Updated for V16)

 

[Jivani19]

(Updated for V16)

u are a Boss ty Exo