In the tile editor, Icon is listed before Style. And, no matter the order you select them, at the bottom Icon will be shown first, on the left, and Style to its right.
However in states selection, Style is on the left and Icon on the right. My natural inclination has been to follow the order in the tile editor. I’ll bet I’ve wasted nearly a minute of valuable time because of this!
My suggestion is to have the order of the states consistent, I would prefer Icon on the left.