Just updated to 2020 and now when I open part or assembly files, nothing shows in the view port. I can see all the features in the tree on the left. If I change the background from default to white, I can see my part. I shouldn't have to do that. Also, I have the part shown as "shaded with edges". I can't see the edges unless I'm rotating the part. I know this isn't that big a deal but, shouldn't common things that worked before an update work after?