Right mouse click not working

Hello,

I have tried tinywm, evilwm, twm and the best of the best is really ctwm.

However the three WMs have the same issue:
The right mouse click on the desktop or into firefox is not working at all.

my config is here:
https://github.com/spartrekus/CTWM-window-manager-2017/blob/master/ctwmrc-v3.txt


It works after running wm2 or jwm, and then to start ctwm.
But then, button3 + m (alt) to resize is NOT working :(

Would you have any idea how to make the right mouse click working?

It is of course important to access menus. For instance, I would like to
access menus of Libreoffice to change something, or any kind of menus on
general.

I am thanking for reading you and I would like to thank you for maintaining
CTWM !!
Spartrekus