Menu items are not fully visible until you hover over them (on the screenshot).
In the main (top) menu, everything is fine.
$ ngraph -V
(Ngraph): configuration 'file_win' in section [x11menu] is not used.
(Ngraph): configuration 'axis_win' in section [x11menu] is not used.
(Ngraph): configuration 'legend_win' in section [x11menu] is not used.
(Ngraph): configuration 'merge_win' in section [x11menu] is not used.
(Ngraph): configuration 'coordinate_win' in section [x11menu] is not used.
(Ngraph): configuration 'information_win' in section [x11menu] is not used.
(Ngraph): configuration 'palette' in section [x11menu] is not used.
(Ngraph): configuration 'single_window_mode' in section [x11menu] is not used.
Ngraph version 6.09.01
Copyright (C) 2003, Satoshi ISHIZAKA.
compiler:
gcc 10.2.0
library:
GTK+
compile: 3.24.24
linked: 3.24.24
GLib
compile: 2.66.4
linked: 2.66.4
Cairo
compile: 1.17.4
linked: 1.17.4
Pango
compile: 1.48.1
linked: 1.48.1
GtkSourceView
compile: 4.8.0
linked: 4.8.0
readline
compile: 8.1
linked: 8.1
GSL
compile: 2.6
linked: 2.6
(ngraph:38155): Gtk-WARNING **: 11:57:51.236: no trigger event for menu popup