Comment # 3 on bug 1083399 from Wnereiz Z

(In reply to Yifan Jiang from comment #2)
> I am closing this since it looks like nobody is against it :-)
> 
> For the usage, please refer to the help document:
> 
> https://help.gnome.org/users/gnome-terminal/stable/pref-menubar.html.en
> [highlight]
>   "To enable the menubar by default in all Terminal windows that you open..."

This method did the trick. But this design is really misleading, I hope it can
be improved from upstream. Anyway, thank you!