A lot of nits in that movie all have to do with atmospheres. Not just the Martian atmosphere being able to blow over a spacecraft (or blow inward a thin polyethylene sheet over the habitat door) but the choice of atmosphere in the habitat and space suits.
They apparently used ordinary air, which makes very little sense. I have yet to see a flexible pressure suit use anything but pure O2 at low pressure, and even they are famously stiff and fatiguing to work in. Nor would the habitat be using air; it would have to be considerably heavier to do so, and that's the last property you'd want to have to carry to Mars.
You'd also want the habitat atmosphere to be the same as in the suits, otherwise you'd have to go through a lengthy prebreathing procedure every time you did an EVA, just as they have to do on the ISS and did on the Shuttle. It's acceptable there because EVAs are uncommon, but it was clear that the astronauts on Mars did most of their work during EVAs.