When my laptop is docked at work, I have a second screen. I usually read my news on that second screen.
When I come home, and I'm using my laptop without a second screen, Feedreader insists on displaying on the second screen where it was, where there is now... well, empty space.
There appears to be nothing I can do to tell it to maximize onto the first (and now only) screen.
It should detect the change in the desktop and readjust its position accordingly.