I tried to report it in game but it kept saying "cannot make connection" hence me posting here.
As for other stances having trouble with it, I bought a dual phaser from exchange for my liberated borg char since she has the swagger stance, her right hand does this instead of the left hand like in my screenie in OP. Again, only when they strike a pose.
I did go into aim mode to check them out, they looked in place but the one gun was aimed lower to the ground instead of straight ahead like the other one. for the most part that's fine since it looks like they're being held, just an odd way of holding it, unless she's trying to cover a bigger arc, say if a slope or ramp comes up one gun is already aimed that way. *shrug*
Ok, got some more screenies of my Liberated Borg with the gun in the opposite hand bugging out. Also got some crouched shots and moving while crouched (It's hard to hold a mouse button so screen doesn't recenter, W to move forward, and print screen at the same time btw. lol).