ulduar boss enrage timers

I did a bug report on the bugtracker about ignis's enrage timer and how its not supposed to be there and it got dissmissed without an explanation. Ignis and razorscale didnt have an ernage timer on retail(razorscale even has a soft enrage in the form of the flame debuff which will oneshot the tank after 12 stacks). So i just want to know if those timers are a bug or if they are intentional to increase the difficulty. Can someone from the stuff answer me?

http://wowwiki.wikia.com/wiki/Ignis_the_Furnace_Master



P.S. i found this about razorscale so i guess i was wrong but it seems that if you dont down her with 2 air phases she reaches enrage(By schroey (2,017 – 1·4·14) on 2009/04/16 (Patch 3.1.0)
Enrage timer has been increased to 10 minutes according to Blizzard hotfix.)

Enrage timers, no. Berserk timers, yes. They did.

yep but in razorscale its supposed to be ten mins. Currently she berserks much faster.

Ignis 10 seems impossible, or super-duper hard (normal mode). That 9 min berserk timer is just insane. He should have "soft enrage" when all the adds are killed and he starts to make new ones, but now we are getting wiped out with 8-10 adds still up.

If you know all mechanic's and have your tactic's you shouldnt end in Enrage, even he has 9min Enragetimer. And btw if you have 10 Adds up, i dont think your Tank could even handle 1 Hit of him[Because each Add up gains him a Stacking Buff that increases DMG by 10% if i'm not mistaken] that is pretty much his soft enrage :)