InDesign 16.3 CC download, Win64: In previous versions of InDesign I could select a text or image box, open the 'corner options' drop-down list, and arrow/scroll through the options to see the effect of each on the selected box. In InDesign CC, I can arrow through the list but no effects are shown on the selected box. Instead, it takes 12 clicks to re-open and then select the next of the six options. I have posted this problem in the community, with responses from Bill Silbert and Steve Werner. They have concurred that it's a Bug.