Not sure if this has been reported, couldn't find a post if it had been, but IPS is currently not working with throwing daggers.
Was using the Throwing dagger from completing Into the Mists, as this was the only throwing weapon i was able to get. Had Archers focus on while I killed a boss mob, and switched to IPS to kill the trash. Once I switched over to IPS I noticed that I was NOT hitting everything in a line, but I also lost the precise shot ability allowing me to shoot through mobs to hit the target I had selected. I chose a mob at the end of the line, and every time a mob stepped in front of that mob, then the damage switched to the one in front. I had to toggle Archers focus back on, to allow me to shoot the mob that I had targeted.