More specifically it's the "Laying Down the Law" pop-up.

It doesn't go away regardless of what screen I change to or if I advance the game.

I also tried reloading/quitting to desktop and restarting but that didn't help.

Here's a screenie: Screenie

Edit: Turning off tutorials and then turning them back on fixes it but I'll leave this post up as I feel the stuck pop-up is still a bug.