Can't build at bottom of map

[hhsmiley]

I just re-installed version 106 C Rev 3 and the recent update 6 and now I can't build buildings at the very bottom of the map. 

I think this is something that happened once before, but it was a long time ago and although I think there's a simple fix, I can't remember what it was. 

Any help is greatly appreciated!

[Nyerguds]

That's an original bug I never managed to patch. It's in the patch FAQ. The only fix is running the game with a height of 400 pixels.