[19.7 Ground Combat] Unable to throw grenades on new farm submaps

[Dranak]

I don't have a SS handy, but on some of the new building farm submaps I am unable to throw grenades at all. Can't throw them into the buildings from the outside, can't throw them at other points inside of them, but I believe I can throw them out into the surrounding area. Selecting a grenade over those tiles gives the Xed out cursor.