[UPDATE 9/19: An official hotfix note posted late on Sept. 18 suggests this problem has been fixed. My original post appears below.]
Patch 5.4 brought with it a huge quality-of-life improvement for Combat rogues: the ability to ensure that Killing Spree deals all of its damage to a single target, even when other enemies are within melee range. Unfortunately, it’s not yet Spree-ing as well as intended.
Since the patch landed, a number of folks have taken to the Interwebs (e.g., MMO-Champion, official forums) to point out moments when they’ve tried to use Killing Spree and have been unable to — not because of traditional reasons, like sudden horrible terrifying death, but because the game was telling them they were too far away from their target. A few players have reported seeing this error on the Galakras fight in the Siege of Orgrimmar raid, even though they’re close enough to the boss to be actively stabbing it in its bodily areas with their autoattacks.
The bulk of the complaints appear to stem from attempts to use the single-target form of Killing Spree, which occurs when Blade Flurry is turned off. This makes sense, what with that mechanic being new and all. I did a smidge of testing on the PTR during today’s maintenance, and found that I had to move closer to a target dummy in order to activate KS if Blade Flurry was off. (My personal theory — shared by a few others — is that single-target KS isn’t correctly handling a target’s hitbox, a.k.a. the distance you can be from the target and still hit it with melee attacks.)
A few players have also reported seeing errors when they try to use single-target KS on a target that’s slightly above or below them, though claims of this have been more spotty (probably in part because raid fights take place on level ground).
Fortunately, the Big Guns appear to be working on at least part of the problem:
Clearly, single-target KS wasn’t nearly as simple a mechanic to implement on the back end as it might seem to many of us on our side of the game. (“What? Just make it hit our current target. How hard could that be?”) Hopefully these teleport issues won’t prove too much of a beast to address.
Combat has long suffered somewhat as a raid and PvP spec due in large part to Killing Spree’s fragility, though before now those problems tended to revolve around either 1) the inability to focus on a single target (now resolved) or 2) the teleport mechanic itself leaving a rogue dead or trapped (not-so-resolved). Between these issues with the new KS and the issues I mentioned earlier with Ruthlessness, the Combat spec isn’t getting any favors as it strives to reach equal footing with Assassination in the final raid tier of the expansion.