Comment 4 for bug 1770205

Although I'm not on Ubuntu this is the only issue I could find about this: I have the same issue with xfce, and it seems like it has something to do with the fact that my main screen is 2560x1440 and my second screen 1920x1080. So my suspicion as a programmer would be that it sees "1440" as the edge even on the 1080p screen, so playing a panel at the bottom of my 2nd screen is not detected as being "on the edge". My C is too rusty to confirm this suspicion myself though.