I am using Linux Mint 18 Xfce 64-bit.
As you can see in the image below, for some reason left or right-snapping some windows like the Terminal, Emacs, etc. leaves these "breaks" in the middle and the bottom of the desktop (in the image you can see red behind these breaks - it's my desktop background). This does not happen for Thunar, Google Chrome or the majority of other programs. Any idea how to get rid of these breaks?
A zoomed view: