With my current save game I am not able to assign an unassigned soldiers to my dropship (although there is enough space). Second, I am not able to rearrange the soldiers in the dropship before going on a mission. I saw some older threads about this issue but they seems to be caused by a version mismatch of Xenonauts. I started with V1.63 and I am still using it.
Is there any solution/ workaround?