Hey Illfonic,
I play on PC, this is a video I took of a PS4 Fireteam glitching through the Overgrowth map. When I could not find them heading to an objective, I tracked them to the corner of the map.
There, one player was bait, and the other were beneath rock. I killed them with Leap Slams, one called for Reinforcements, and I found them again in the same area I assume trying to glitch under the map again.