I hadn't reported this bug, probably it's the same: On some of the new maps in 2.6 soldiers can hardly leave the dropship, they need to go round in kind of a circle through the firebird dropship until they can leave to the other side. I recall it happens/happened in the (German) "Stadtrand" map, the one that comes alternative to the "parking house" map. I don't recall the English names of those. You now start with the firebird landed on some kind of a concrete structure that you have to move down to eliminate all aliens, unless you can shoot all of them from the top of that thing right away which also sometimes works. Hope that's sufficient description.