Install backstep by entering the following commands in the terminal:
sudo apt update sudo apt install backstep
Description:
Draws icons for minimized windows on your desktop
Backstep is a program that draws icons for minimized windows on your desktop. It doesn't depend on the window manager or on a desktop-drawing program. It is meant to work with window managers that are EWHM compliant. . Known Window Manager Support: * Metacity: known for sure to work * Xfwm4: known for sure to work * Fluxbox: known not to work * Kwin: partial support * Other: untested
Homepage: http://backstep.sourceforge.net/
Version: 0.3-0ubuntu7
Section: universe/x11