It works fine. I just did it without any issues. You are obviously doing it wrong.
So it worked for you, must be that all the rest of the people here are “doing it wrong”? You either don’t know what a “bug” is, or you are trolling. Either way you are not being helpful at all.
I fixed the issue by dropping the box and restarting the instance. The ground targeting mentioned by the dev earlier does have a hand in the issue. I didn’t turn it off but just clicked the ground right on top of the people we need to use it on. Seems the area it wants you to target is VERY tiny.
So, either turn off ground targeting or click all around the feet of the people until you find the sweet spot.