What we have here is a fairly compact arena style map with, basically, 3 levels.

There's the ground level, a lower level in a sort of little maze setup, an upper level that runs around the edges. Technically there's a 4th level if you count this little bunny-track type bridge that runs across the middle, and while there's another level above that I think it's only for plants.
Let the bots have a go at it while I spectated, and for the most part...

...they use the entire space, but that's not to say I didn't find 1 little glitch; at least in the bot pathing.
The bridge across the middle higher up can only be accessed via lifts on 2 sides of the map, which are situated on either side of that lower level maze.

Bots would never get on the lifts. They'd run right up to the edge of it, and then stop.
This wouldn't be an issue for actual players.