[2021] Why Don't "Rescue The Survivors" Missions End When You Rescue All The Survivors?

I realize this is probably a topic that has been discussed before, but the fact that it's still a thing means it should be brought up again.

I just got done doing one of these missions. Me and the other three guys I got matchmade with rescued all the survivors. We then had to sit around for 13 minutes waiting for the session to end. Why is this a thing? We accomplished the mission. The match should end just like it does for other mission types. Instead of moving on to another match, I have to waste my time in one that I already got done.

This needs to be changed.