I am doing the patrol the Alpha Centauri Missions. In some of them where you have to clear Reman squadrons I have had them cloak on me and then never reappear. I've killed 4/5 patrols but the last guy cloaked and never reappeared. I have spent 1 hour flying everywhere in the system, along the normal path, in the circled area, etc. and he never appeared. The mission therefore cannot be completed. I quit the game and came back in. Same issue. Flew out to sector, came back in. Same issue.