Eli Zaretskii <eliz@gnu.org> writes:

>> From: Thierry Volpiatto <thievol@posteo.net>
>> Date: Sat, 24 Aug 2024 13:39:34 +0000
>> 
>> when Emacs is built with "--with-x-toolkit=lucid" a menu displayed by
>> x-popup-menu and larger than (window-height) doesn't have a scroll bar.
>> The part which is shown is the center part (first lines and last lines
>> doesn't appear).  This doesn't happen with a default build (gtk).
>
> Which menu was too long?  Is it a menu generated by a core Emacs
> feature or by 3rd-party package?

A menu in Helm, screenshots attached, the first is with Lucid and the
other with Gtk.

-- 
Thierry