You're operating under the assumption that the reason that the game hasn't ended yet is that there are one or more hostile Cybrids remaining to be killed. When, in fact, there is no hostile Cybrid remaining and the reason the game hasn't ended yet is because one side, Rebel or Imperial, has yet to claim victory.
I know this because I am a Metagen/Traitor. And an Inquisitor/Duplicator, but that's besides the point.
I asked GlyphGryph why the game wasn't over during Night 3, and he told me that if everyone's role claim was true, i.e., three non-killing Rebels, two non-killing Imperials, one Cybrid survivor, then the game would have ended the morning of Day 2.
So one of you is fakeclaiming. Who? I don't know. But someone's preventing the game from ending and it's not me.