How to close debug window (qt client on linux) I have the same problem with the Litecoin and Dogecoin client. Once I open the window in the menu Help &gt; Debug window there is no way of closing it (no X in the corner of the window).

I'm using Debian and Gnome 3.

The following image contains the Dogecoin client (downloaded from Github and compiled), Litecoin client looks just the same.
Just right-click on the top bar, and it will bring up a menu that allows you to close it.