They are aware of it and trying to get it fixed by 3.1.1. Here is what was in the dev tracker.
Virulence Sniper's "Laze Target" still broken? | 02.10.2015, 10:36 PM
This is bugged!
I have notified the combat team, and they're going to see if they can get it fixed for 3.1.1 (no promises!)