bug#10104: Extra empty space at bottom of frame under Xfce, athena toolkit

[Glenn Morris]

Package: emacs
Severity: minor
Version: 24.0.91

If I build Emacs using --with-x-toolkit=athena --without-toolkit-scroll-bars,
then on GNU/Linux (Debian testing) using the Xfce (4.8) window manager,
with emacs -q --no-site-file (or -Q, so that X resources are ignored),
there is extra blank space at the bottom of graphical frames. It looks
to be about half a line high, and has no scroll-bar or fringe
(screenshot attached). Resizing the frame does not make it go away.

This occurs with 23.2 onwards, but not with 22.3 or 23.1. It does not
occur with a Gtk toolkit build of any version. It does not occur in a
Gnome 3 or Window Maker session, ie seems to be specific to Xfce.

emacs_xfce4.png
Description: Screenshot of Emacs with extra blank space

emacs-23.1.png
Description: Emacs 23.1 does not have this issue