UH DK rogue location after vanish in arena

[Vizex]

Today ive played some arenas with resto druid with my UH DK, what ive found out is that when rogue goes into vanish, DKs pet still follows him even tho hes invisible/untargetable. This can be combined with death and decay to uncover the rogue. Would fraps it and put video but my laptop is too shitty for that.

[advanta]

Today ive played some arenas with resto druid with my UH DK, what ive found out is that when rogue goes into vanish, DKs pet still follows him even tho hes invisible/untargetable. This can be combined with death and decay to uncover the rogue. Would fraps it and put video but my laptop is too shitty for that.

Happens with hunter pets (and therefore probably all player-controlled creatures) too.