hair&fur still missing in IR

I created a thread for this problem max hair&fur is missing on IR - Issues - Chaos Forum. and it was moved to resolved bug.
but the problem is still happen to me, IR randomly won’t show the hair&fur (95% appear , 5% appear). still looking for what’s really going on…
check the attachments. I uploaded the scene, you can try it.
dailybuild feb 09, max 2015 SP2.

update: (95% disappear , 5% appear)
h&f & ir.zip (1.05 MB)

You are right, it doesn’t work very well. It usually starts displaying hair in IR after you run a regular rendering.

yes maru. i tried it again with max 2014 SP5. yes, it’s still occurred.

Did you report it on mantis?

please do not do duplicate reports. Report either here or on mantis, but NOT both.

ok maru & keymaster. understood!
I never report anything on mantis. I think it is better to focus to one place to track & report.

Fixed, but I am not sure if I will be able to keep the fix. I had to re-enable something I disabled for some other reasons… so now lets wait until simebody reports a different bug caused by this fix. 3dsmax API is screwing me over hard time here.