[gthumb-list] Facebook upload with 3.2

[akusai gmx net]

Hello,
I just installed gthumb 3.2 from source and wanted to try the facebook
upload, but all I get when choosing "Share -> Facebook" is a new window
with a blank page. I tried with right mouse-click and "Reload", but the
page stayed empty.
With Picasa-Web-Album the upload works as designed, with Flickr login is
also possible and Photobucket also shows at least a login page.
I'm using gentoo with webkit-gtk version 1.10.2-r300
(webkit-gtk-1.8.3-r200 is also installed - in another "SLOT" - because
other applications depend on this version).
Is the empty facebook login a general issue with gthumb 3.2 or a problem
with my setup? Any tips on how I could get the facebook login page?
The output of ./configure, prior to make, shows the following
information (don't know if that helps):

Configuration:

        Source code location : .
        Compiler             : gcc
        Prefix               : /usr/local
        CFLAGS               : -g -O2 -fPIC -DPIC -Wl,--as-needed  -Wall
-Wcast-align -Wtype-limits -Wclobbered -Wempty-body -Wignored-qualifiers
        Debug                : no
        Run in place         : no
        Build tests          : no
        Exiv2 support        : yes
        JPEG tools           : yes
        TIFF tools           : yes
        Clutter support      : yes
        GStreamer support    : yes
        Use libopenraw       : no (uses dcraw)
        Web services support : yes
        Use libsecret        : yes
        Burn disc support    : yes
        Web albums           : yes
        SM client support    : no
        Map support          : yes
        SVG support          : yes
        WebP support         : no

Regards,
Torsten