LR 4.2 Crop Not Updating In 2nd Window

Hello

I have two monitors and I use one monitor to show the second window.

In 4.2 (definitely did not happen in 4.1):

When I crop an image in the main window, the second window doesn't show the crop. It shows if I close the crop command, or even if I move the mouse to invoke the preset window and then move back to the crop.

I also have the same kind of issue when I use the adjustment brush.

Is there a new setting that controls this behaviour? I can't find anything.

I'm on Win 7 64-bit.

Thanks

Mike