I can confirm this by looking in the sources.
gtweakui-galeon.desktop has the icon /usr/share/gTweakUI/g.png configured.
The desktop files gtweakui-menus.desktop, gtweakui-nautilus.desktop, and gtweakui-session.desktop have no icon configured.
I can confirm this by looking in the sources.
gtweakui- galeon. desktop has the icon /usr/share/ gTweakUI/ g.png configured.
The desktop files gtweakui- menus.desktop, gtweakui- nautilus. desktop, and gtweakui- session. desktop have no icon configured.