Hi Ashley,
I didn't take a screen shot as there was nothing unusual to see, other than when you opened up Preview (for example), the ribbon was minimised. So to close the preview you needed to maximise the ribbon to see the exit button. When you were taken back to the main screen the same thing occurred.
It was odd that it happened at exactly the same time for Wendy and me - I was wondering if it had something to do with a Windows update that would have happened overnight (our time). And maybe a subsequent update (over the next night) fixed it. That would account for why it happened simultaneously for both of us in Australia.
Also, both of us did the reboot thing. Didn't fix it. But, it's now 1am NSW time, so my memory is getting a little hazy.