I do photo editing. I have noticed that sometimes changes are not refreshed/reflected in preview so that you can see them. For example, if I change the exposure value, I expect to see the change as soon (or within a very short reasonable time) as I hit the enter key in that field. There are many times that I sit and wait for a change to happen and it doesn't. Often by changing the zoom I will then see that the change is processing but I have to take that extra step. Can we get a "change refresh" button that will complete the refresh after a change?