In the upper-left corner of every window, you have a small arrow pointing down. If you hover over it with the mouse, it describes itself as "Window Menu".
Here's my problem (and I know I'm not alone!)
Often, while opening the "File" menu or some such, I accidentally aim too high, and accidentally click that little arrow. Rather than opening a window menu, it automatically selects one of the options, which is invariably "Get rid of titlebar System-wide". All of a sudden, none of my windows have a titlebar anymore.
To fix it, I have to go to Administration --> Compiz fusion icon, right-click that icon in my taskbar, and select "Reload Window Manager". It takes about 8 or 9 seconds, and all windows get the titlebar back.
My question: How to GET RID of this so-called "Window Menu" -- hide it, disable it, or something. I need this menu about as often as I need hen's teeth or snake armpits. Its a nuisance and nothing more.