It's not another problem with these planes, they are requesting the same exception from some more modern regulations for the -700 series that the FAA gave to the other two series in production now. The 737 max is not a design from scratch... so it makes sense it doesn't comply with some new regulation. The pilot union for southwest has already said they'd prefer if Boeing didn't have to redesign the cockpit for some of the variants. (problaby will lead to more confusion for pilots swtiching between max types

Also the media has covered it a ton! Google it!!