What happened is as follows;
I was raiding a carrier with 2 units in predator assault suits, and when i had them teleport to the 2nd floor something weird happened.
1. I had my units walk into the teleporter on the ground floor while facing north west, so to the tail of the carrier. This means i entered the next carrier floor without having a line of sight to either the walls or door on that floor.
2. I told one of my guys to walk further into the floor, telling him to walk past the point i knew there would be a wall. He rotated clockwise and started walking, but suprisingly he walked right through the wall instead of getting stopped by it.
3. Trying to make the same bug happen again, i teleported my 2nd guy to the next floor. By then i had spotted the door but the wall still remained in the fog of war. Telling the 2nd guy to also walk past the wall (while the wall was hidden) resulted in him walking through it as well.
Screenshots below
Got an error forbidden message when i wanted to upload the save though, so thats here
https://www.mediafire.com/?m55lctvjr43of8a
http://cloud-4.steampowered.com/ugc/702855500424995991/D3E5CD9EEB2A13B73B04B3ACB93E442354FBB1DA/
http://cloud-4.steampowered.com/ugc/702855500425023111/0061862F2C91BFA53FAAA36692CB20A4F648EFEE/