I use it all the time on Linux 17 Cinnamon. It ocasionally has an issue when capturing an area: the rectangle overlay showing the selection gets captured too, altering the colors. I get around this by just taking a new shot.
This is really hard to fix, x11 is just terrible at cleaning up windows after they close. slop has lots of precautions to keep it from appearing in screenshots though.
maim shouldn't suffer from it.