They just stand there. Other squad members follow me, but some don't, and no matter what I do, they don't move. I also repeated my orders, and still they didn't listen.

They are NOT in combat mode; they are in Aware Mode.

When I say "Return to formation" they just form their own formation and then don't listen to any movement-related order at all.

They do still shoot enemies though, and they still do acknowledge orders (they say they are following my orders even though they aren't)

They aren't stuck because of any objects; my squad is on a clear road with no obstacles. They don't even try to move. They just stand there

I also tried to give each individual AI squad member a move order to my location, they didn't move.

How to fix?

Note: this was after a vehicle dismount followed by a fight with enemies

And if it has to do with anything, I was playing Escape 10 Altis and formation was wedge.

Edit: Another thing; if I shoot them, when they respawn, they do get back in my main formation. However, when I move, they stand still and don't move with me.