Walled Maps like Arena, Hideout start without Walls in Singleplayer. Normal Map, just no Walls at all. The bug doesnt seem to happen in MP, didnt happen when i turned my vpn off, turning the vpn on again didnt recreate the bug.
Just to check: are you making sure that you have an AI opponent on a different team? If all players are on the same team, then I think those maps are supposed to spawn without walls.
Oh Boy, that was a “little” stupid by me 11. misclicked and had the ai on my team. didnt know the game was supposed to respond that way. thanks for the info.