Tera, can you please make sure that you are closing all the buildings you create? I've seen a few buildings in this area that you created that are not valid building shapes. I'm specifically looking at w1337172885 right now and I'll fix it, but please look into the process that you are using that may be creating multiple nodes for a building. One hint that there is a problem is the "warning:close_nodes:vertices" that ID should have given you when you tried to commit this change. I would also say that if you are using ID you may want to use the "q" key to square houses as you go - this will not only square the house but it will indicate where you may have bad building polygons. 

Thanks for your contribution!! Happy mapping