You can see the new map isn't finished. Here are some things I noticed when I played it:
1. Corpsed raining down the sky
There's a strange bug that makes dead bodies spawn and fall down to the ground. The cause could be misplaced spawn points. I mainly saw this occuring in the city center, and it happened quite often.
2. Bots don't know how to get up the wall
The wall at the east edge of town poses a big problem to the bots. Often I saw them hanging out at the base of the wall. They know how to get over the wall where it's scalable, but at the higher points they just sit around at the base of the wall.
3. strange day/night change glitch
The last base of the grey faction (east farm) seems to have a different day/night cycle than the rest of the map, IE, when you go down the hill to east, it becomes day, when you climb up the hill, it becomes night. Around the farm it's always night. I also wasn't sure if the day/night cycle worked right on the rest of the map. There it was day most of the time, I think (this way the farm is "the dark base").

For 1, try turning off post processing?

1. I can think this happening from two different things. One is that the system can't find a place where to make the virtual soldiers real, dead or alive, when you approach an area with a lot of buildings. The other reason is that the bodies can be thrown from explosions inside the new platform objects through the wall on the side of the platform, which basically launches the bodies high up in the air.

2. AI can't get around walls that can't be climbed up unless the walls are for buildings, this simply hasn't been implemented yet. This is where we have to wait until beta 0.6, when there will be 1) AI capabilities to deal with walls that are too high to climb and 2) ladders placed frequently enough which the AI can use to get over the walls.

3. This likely isn't about day/night change, there's a single day/night progression on the whole map. This could be related to the player's local height based darkening of the terrain. When you're standing on the high terrain at the farm or the villa, you can see down the hill and it's almost black where the terrain is low, this is to visualize that it's lower there. When you approach that lower area, the colors blend in, either as bluish (night) or beige-ish (day), and the up-hill should now seem to be brighter than where you are standing.

No, that doesn't work, I think Pasik's post explains that better. By the way, this only occurs on map 2 (the new city map).