Linux Gnome Panel is not displaying open applications. How to fix it.

When Linux with the Gnome desktop is not displaying open applications in the panel it means you may have accidentally removed the “Windows List” from the panel.

Right click on the panel in a blank area. In the menu that pops up choose add to panel. Then click on “Windows List”. Then click and and close it and it should now show the applications you have opened in the panel.