[Pkg-xfce-devel] Bug#892818: [xfce4-panel] Properties/About will not show for some plugins (g_variant_iter_next: assertion valid_format_string failed)

[Marcel Partap]

Package: xfce4-panel
Version: 4.12.2-1
Severity: normal

--- Please enter the report below this line. ---
In Panel preference dialog, on tab "Items", some of the plugins no longer show their properties (which is also missing from the context menu when directly right-clicking in the panel) or their about dialog (same).
.xsession-errors logs this for each attempt to open item-properties/item-about:
> (wrapper-2.0:19338): GLib-CRITICAL **: g_variant_iter_next: assertion 'valid_format_string (format_string, TRUE, value)' failed                   
>                                                                                                                                                   
> (wrapper-2.0:19339): GLib-CRITICAL **: the GVariant format string '(uv)' has a type of '(uv)' but the given value has a type of 'a(uv)'           

The problem has been here for a good while.


--- System information. ---
Architecture: 
Kernel:       Linux 4.15.0-6.1-liquorix-amd64

Debian Release: buster/sid
  510 unstable        liquorix.net 
  510 unstable        ftp.de.debian.org 
  510 unstable        dl.winehq.org 
  510 unstable        deb-multimedia.org 
  510 testing         ftp.de.debian.org 
  509 experimental    ftp.de.debian.org 
  502 yakkety         ppa.launchpad.net 
  502 artful          ppa.launchpad.net 
  500 zesty           build.openmodelica.org 
  500 stable          ftp.de.debian.org 
  500 stable          dl.google.com 

--- Package information. ---
Depends                    (Version) | Installed
====================================-+-=============
libatk1.0-0              (>= 1.12.4) | 2.26.1-3
libc6                       (>= 2.4) | 
libcairo2                 (>= 1.2.4) | 
libdbus-1-3              (>= 1.9.14) | 
libdbus-glib-1-2           (>= 0.88) | 
libexo-1-0                (>= 0.5.0) | 
libfontconfig1             (>= 2.12) | 
libfreetype6              (>= 2.2.1) | 
libgarcon-1-0             (>= 0.3.0) | 
libgdk-pixbuf2.0-0       (>= 2.22.0) | 
libglib2.0-0             (>= 2.41.1) | 
libgtk2.0-0              (>= 2.24.0) | 
libice6                 (>= 1:1.0.0) | 
libpango-1.0-0           (>= 1.14.0) | 
libpangocairo-1.0-0      (>= 1.14.0) | 
libpangoft2-1.0-0        (>= 1.14.0) | 
libsm6                               | 
libwnck22                (>= 2.30.7) | 
libx11-6                             | 
libxext6                             | 
libxfce4ui-1-0            (>= 4.9.1) | 
libxfce4util7             (>= 4.9.0) | 
libxfconf-0-2             (>= 4.6.0) | 
exo-utils                            | 


Package's Recommends field is empty.

Package's Suggests field is empty.