Rating Circle appears after attempting crop

[Morgan33393322733l]

I pressed something on my keyboard while cropping an image and now i have this weird shaded circle with an x and some boxes that wont go away and Ive gooogled and cant find anything! Anyone know how to get it to go away?

 

[Geoff the kiwi]

Which OS and Lightroom version??

Escaping from/closing crop does nothing?

Using undo does not work??

Going back in History before the crop doesn't work??