hide titlebar at gnome on maximized window
/usr/share/themes/Adwaita/metacity-1/metacity-theme-3.xml @frame_geometry name="max" + has_title="false"
See extantion: https://extensions.gnome.org/extension/723/pixel-saver/
/usr/share/themes/Adwaita/metacity-1/metacity-theme-3.xml @frame_geometry name="max" + has_title="false"
See extantion: https://extensions.gnome.org/extension/723/pixel-saver/