Nefarian fight - Shadowflame Initial problem

[ghost]

Description:
When Nefarian (http://www.wowhead.com/npc=11583/nefarian) spawns and shadowflames everyone, he just stops... mid-air... quite depressing actually.
Current behaviour: (Tell us what happens.)

Expected behaviour: (Tell us what should happen instead.)
Nefarian should continue flying down to the platform to initiate the rest of the fight
Steps to reproduce the problem:

1. Endure Blackwing Lair
2. Endure Nefarian's first phase
3. Watch your hard work be squatched by a script bug

Branch(es): 3.3.5 / master (Tell us which branch(es) this issue affects.)
3.3.5a
TC rev. hash/commit:
28050f3
TDB version:
62 with updates
Operating system:
Win 8.1 x64

[Aokromes]

#9083