Azuremyst Isle - Engineer "Spark" Overgrind(npc=17243) missing Text and stays still

While doing Show Gnomercy(quest=9537) you have to kill Engineer "Spark" Overgrind(npc=17243), you have to talk to him to make him hostile, he will give a speech before he will attack you.

The missing text is:

Engineer "Spark" Overgrind: Can't you see I'm busy? You: It's all over, Spark. The admiral knows it was you who betrayed the Alliance. Now you're either going to cooperate with me and tell me everything that you know or we're going to engage in some fisticuff. <Engineer "Spark" Overgrind laughs.> Engineer "Spark" Overgrind says: Does it frighten you to know that there are those that would serve the Legion with such devotion as to remain unwavering citizens of your pointless civilizations until called upon? Engineer "Spark" Overgrind says: Live in fear, die by the will of Kael'thas... It's all the same. Engineer "Spark" Overgrind says: And now, I cut you! Engineer "Spark" Overgrind says: DIE!

For me he just turn hostile and starting to attack me no text,

Also while he is attacking me he will just stand still and Throw Dynamite at me, No Melle, no following me

http://www.wowhead.com/quest=9537/show-gnomercy#videos:id=114125