bug#72549: 29.4; menus do not work properly on wayland (pgtk)

[Eli Zaretskii <eliz@gnu.org>]

Ping!  Sergio, can you please answer Po Lu's question?

> From: Po Lu <luangruo@yahoo.com>
> Cc: Sergio Callegari <sergio.callegari@gmail.com>,  72549@debbugs.gnu.org
> Date: Sat, 10 Aug 2024 16:27:39 +0800
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> >> Date: Fri, 9 Aug 2024 13:42:54 +0200
> >> From: Sergio Callegari <sergio.callegari@gmail.com>
> >> 
> >> Using emacs in KDE wayland, with the pgtk build. On a low spec machine,
> >> emacs is hardly usable in this configuration. The menu system (file,
> >> edit, options, etc.) misbehaves. For instance, you position the mouse on
> >> "buffers", but the buffers menu does not open. To get it, you need to go
> >> on File and then slowly move right through edit and options.
> >> 
> >> On a high spec machine emacs is usable with exactly the same config (Amd 
> >> ryzen 9 with amd graphics).
> >> 
> >> in X11 mode, emacs is fine on both.
> >
> > Po Lu, any ideas or suggestions?
> 
> Is this specific to KWin and Emacs, or reproducible on other compositors
> and with other GTK 3 programs also?
>