Zul'Gurub - Edge of Madness event bugged

[LEO33SoFo]

Description:

No boss is spawned when using the Gurubashi Mojo Madness item on the Brazier of Madness in Edge of Madness, Zul'Gurub.
There are comments mentioning this problem in the issue #24427 too.

Expected behaviour:

A boss based on an event should be spawned correctly when using that item according to Wowpedia.

Steps to reproduce the problem:

1. .additem 19931
2. .go gameobject id 180327
3. Click on the Brazier of Madness and check if the event boss is spawned.

P.S: I encountered this bug just via normal progression, without using GM commands.

Branch(es):

3.3.5

TC rev. hash/commit:

9d95912

Operating system: Windows 7 Enterprise 64bit

[offl]

Useful info in #24427 (comment) and below