I ran into the problem once as well as a fleet member had the problem. so on my 2nd round of it, i hailed starfleet b4 i even left the system. collected the reward it completed, THEN i left the azure nebula
*Me*Why don't you just step away from the weapons console. You and I both know that you couldn't hit that cube, even if it was right in front of us.
*Junior Tactical Officer* But sir the cube IS right in front of us.
*Me* EXACTLY! Its right in front of us and you still missed it! Just step away from the console.