When I try to x out the color choosing window, then reset, then x out of the color choosing window again, it says that someone already picked that color. But it's not a color, it's just the x button to close the mini-window. And it doesn't just go away, it keep reappearing until you choose a color that hasn't already been picked. However, when you reset it, it keeps the memory of which colors have been picked.
Because of this I can only measure spellbook points in game at maximum 5 times. My dreams of playing a 8+ player game online are crushed, lol. Or maybe this is just a bug for when someone is playing by themselves? Idk.