Gotta agree with the posted observations posted here. I watched the film with the recorded views. The second spit is mostly blocked from sight by the canopy frame work as it closes on you. Its icon becomes slightly visible for a couple of seconds before he shoots, but is not visible enough to show his range and therefore no indication he is rapidly closing. Some folks would say you should have checked the other icon as soon as it became visible. While this is true if your only goal is to survive, realistically, most of us would have played the odds like you did and saty on your target and shoot. Just bad luck on the way the two spits were aligned and converged like that, but no bug.