This is unfortunate but Sisyphus' Xfce can't really strive with its
default /etc/xdg/xfce4/xfconf/xfce-perchannel-xml/xsettings.xml,
namely IconThemeName; while p8's one still does pretty good.

Thanks antohami@ for his analysis and workaround suggestion.

See-also: https://bugzilla.altlinux.org/32924
See-also: https://lists.altlinux.org/pipermail/devel/2017-February/202348.htmlSuggested-by: Anton Midyukov <midyukov-anton@ya.ru>