The problem is that there could have been MANY popup boxes all over the place on the screen. The user would have to manually organize it by resizing each window and move it to a convenient location.
But now, I added a way to minimize the popups to a dock at the bottom so they're very very organized. They could even shrink the popup so only the title bar appears. That's also very convenient. This has been on my to do list all of 2016. It turned out better than I expected.