I entered the last nav point of the mission where you meet Hobbes/Thrakhath (Kilrah bombing) uncloaked and proceeded to kill Hobbes. After killing a bunch of Sorkaths and others I realized that they keep coming (to infinity) and that there will always be a minimum of 4 on radar - but I couldn't find Thrak! I cloaked and pointed my ship at the planet but I could never reach Kilrah because the 4 Sorkaths were always on my radar. I replayed the mission and this time entered Nav 4 cloaked, located Thrak, and destroyed him. However, as soon as I destroyed him I immediately went to the trench without engaging Hobbes (who was left alive). I don't remember running into this the first time I played the game. Any ideas on what is going on?