Bug#551807: openbox: xy-maximized windows uncorrectly y-sized with xfce4-panel + matchbox-keyboard

Package: openbox
Version: 3.4.7.2-5+b1
Severity: important

Hi,

I use xfce4 + openbox + matchbox-keyboard on an Openmoko FreeRunner[0].
xfce4 is configured with 1 bottom xfce4-panel.

All applications are xy-maximized using this configuration snippet in
..config/openbox/rc.xml:

  <application class="*">
    <decor>no</decor>
    <maximized>true</maximized>
  </application>

With either xfce4-panel[1] or matchbox-keyboard[2] displayed, the
xy-maximization is fine.

When both are displayed the xy-maximized windows are too high. See [3]:
the dialog's buttons are hidden behind the matchbox-keyboard.

I guess this is an openbox bug since windows' sizes are ok with other
window managers - e.g. matchbox.

Thanks,

_Gilles.

[0] http://en.wikipedia.org/wiki/Neo_FreeRunner
[1] attached panel.png
[2] attached keyboard.png
[3] attache both.png

-- System Information:
Debian Release: squeeze/sid
  APT prefers experimental
  APT policy: (900, 'experimental'), (500, 'unstable')
Architecture: armel (armv4tl)

Kernel: Linux 2.6.29-20090702.gitd1c828aa (PREEMPT)
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages openbox depends on:
ii  libc6               2.10.1-0exp2         GNU C Library: Shared libraries
ii  libfontconfig1      2.6.0-4              generic font configuration library
ii  libfreetype6        2.3.11-1             FreeType 2 font engine, shared lib
ii  libglib2.0-0        2.22.2-2             The GLib library of C routines
ii  libice6             2:1.0.5-1            X11 Inter-Client Exchange library
ii  libobparser21       3.4.7.2-5+b1         parsing library for openbox
ii  libobrender21       3.4.7.2-5+b1         rendering library for openbox them
ii  libpango1.0-0       1.26.0-1             Layout and rendering of internatio
ii  libsm6              2:1.1.1-1            X11 Session Management library
ii  libstartup-notifica 0.10-1               library for program launch feedbac
ii  libx11-6            2:1.3-1              X11 client-side library
ii  libxau6             1:1.0.5-1            X11 authorisation library
ii  libxext6            2:1.0.99.4-1         X11 miscellaneous extension librar
ii  libxft2             2.1.13-3             FreeType-based font drawing librar
ii  libxinerama1        2:1.0.3-2            X11 Xinerama extension library
ii  libxml2             2.7.6.dfsg-1         GNOME XML library
ii  libxrandr2          2:1.3.0-2            X11 RandR extension library
ii  libxrender1         1:0.9.4-2            X Rendering Extension client libra
ii  zlib1g              1:1.2.3.3.dfsg-15+b2 compression library - runtime

Versions of packages openbox recommends:
pn  openbox-themes                <none>     (no description available)

Versions of packages openbox suggests:
ii  libxml2-dev                 2.7.6.dfsg-1 Development files for the GNOME XM
ii  menu                        2.1.42       generates programs menu for all me
ii  obconf                      2.0.3-3      Preferences manager for Openbox wi
ii  python                      2.5.4-3      An interactive high-level object-o
ii  ttf-dejavu                  2.30-1       Metapackage to pull in ttf-dejavu-

-- no debconf information

panel.png
Description: PNG image

keyboard.png
Description: PNG image

both.png
Description: PNG image