Overprint preview checkbox problem
Here's the problem. If I have 3 layers, each with a simple colored box. 2 boxes are overprinted but the 3rd box is not. "Select All" and the overprint checkbox will correctly show a dash, indicating that not all is the same. Here's where it goes wrong. Turn the eye off the layer who's box is not overprinted, then turn it right back on, then Control A again. Now it shows a check in the overprint box indicating that everything you have selected is overprinted. This is a problem that seems to have begun with possibly the earliest update of 2018. I think it was addressed, but not totally resolved because I'm still dealing with it. It's a rather critical problem because if something needs to be overprinted and it's not, you get a disaster when you print. Everything will be missing underneath the element that is not overprinted.
