Changes are doesn't show up
I have a problem. When I edit a photo and a mask, the screen is frozen. Changes don't show up. I change the photo, there is no problem. But the photo in which I tried to add a mask doesn't open any more. I put the number for easy to understand for you guys. I click the number 3 but Lightroom doesn't show this photo. That shows number 2. But you can see at number 1 mask. However, when I add the mask and want to see the changes, it doesn't show any changes. I tried to exposure down to see the difference but it didn't show up. The problem is not only for one photo, it happens all the time. I don't understand what happened. How can I solve that?
