Hi Latino210. I went in to fix
this bug, and I noticed that a lot of the objects in your map are poorly aligned to the grid. Have a look at the image of the couch in sp_east.map (attached). Because the areas of the couch so poorly align to the grid, there are a lot of grid spots where a player might think he could put a soldier, but where he shouldn't be able to, because the couch overlaps more than 4 units into that grid. You should try repositioning and resizing the couch so that it fits better into the grid system and provides more expected behaviour on which grids are and are not accessible. You should do this with all the objects in your map.
And then you should add actorclip brushes to make sure soldiers can't stand on top of objects they shouldn't be able to, as shown in the forum post linked at the start of this post.