You should have 2 options to board the truck :

• Get in the back
• Passenger seat

But the last one may only be available if you try to get in from the passenger door. Try to walk around the truck, you should get the option at some point.

Hello there,

No need to mess around with launcher settings.

Sorry for not being clear enough in my report.

You can fix the issue by getting in the truck as a front passenger seat. It will put you in the back of the truck anyway but the objective will complete, every soldier will get in and then the truck will move on.

Don't go in the back of the truck that's all. But it should be fixed anyway.

It is more stupid than that, choosing "passenger seat" or "get in the back" makes no difference over where you'll seat, as in both cases I ended up being in the back anyway.

EDIT: But choosing "passenger seat" will work !