The only time I know of where the game prevents all clickthrough would be when you are using F10 to switch display modes. I'm sure you already know this, but F10 has three modes that I will call normal, UI and screenshot. In UI mode you can scoot windows around on screen even if they are set for clickthrough, and pressing F10 twice more will return the display (and clickthrough) to normal. Otherwise I'm not sure what is preventing clickthrough.
.
|