Had this happen to me in my last match. After Spider informed us the Invader was gone and the Invader notification went away, they respawned right behind my allies and killed them, then when my allies killed the Invader, they just kept coming back over and over again, no matter how many lives they lost. Once we hit zero revives, the Invader stopped spawning and left us alone, forcing me to comb the whole map for revive tokens just to keep us going until we could board the ship. Hopefully this gets patched with next week's update, otherwise I don't think I want to play contested matches anymore.