Don't know if this is a bug but it takes a solid 10-15 minutes for the map to update crop growth after advancing the day/month. I can sit and watch the map draw the crop growth update (on the field state menu map)...left to right top to bottom. If advancing the day/month happens before the update is done (10-15 minutes after a new day/month starts),  crop growth doesn't register and the entire field stays in its current growth state. It took me over an hour to figure out what was happening and why my fields crops were not advancing to the next growth state.... after advancing 6 months (Aug -> Feb) and the corn was still stage 5/6, soybeans 4/6. Beautiful map though. I love the elevation changes, gritty (real) look of it and the midwest feel. It's kind of unplayable without the growth state happening faster than 10-15 minutes. Also, the home on the default farm needs a sleep icon. 

That is all. Thanks. Peace.