Spirit tap bug?

I noticed a few days ago that even at 5/5 if I sit right as it before the mobs dies of SW:P I don’t get the buff. It’s most noticeable when they run in fear while still taking damage.

I always sit down when I get the buff since I would always hit drink as soon as it runs in fear. Thanks.

I noticed it too…

Spirit Tap talent says

Gives you a 100% chance to gain a 100% bonus to your Spirit after killing a target that yields experience. For the duration, your Mana will regenerate at a 50% rate while casting. Lasts 15 sec.

So, sometimes mobs didn’t start spirit tap talent, also talent description don’t be clear about killing mobs in group that you do damage in a mob, the spirit tap only starts if you give the last hit, anyway I don’t think it should change, only the way how the talent are described.

I’m not particularly worried but I just thought it was a silly issue if it really is a bug.