KDE window manager has a hotkey for enabling tiling. Shift+Alt+F11. This feature enabled tiles windows by default. A handy feature when needed but if you enable this by mistake like I did it is a real pain in the ass to work with. All windows open up maximized by default and require at least a minimum of three clicks to drag around and adjust. There is a hotkey you can press to skip the additional three clicks but not a normal user thing I do.
Under normal circumstances normal users wont press Shift+Alt+F11 by mistake but I press Shift+Alt+F12 a lot to switch off and on the desktop effects for Wine base games.