Fcitx-Config-Gtk3 Crashes When Open "Virtual Keyboard" Setting

[GoogleCodeExporter]

Fcitx-config-gtk3 / fcitx-configtool will crash and return "6453 segmentation 
fault (core dumped)  fcitx-configtool", if I try to open the setting for 
"Virtual Keyboard"(虚拟键盘) or disable it in advanced mode.

Diagnose data: http://paste.ubuntu.com/6736511/

What steps will reproduce the problem?
1. Delete all config files in ~/.config/fcitx, and restart fcitx.
2. Open fcitx-configtool, click on "附加组件", then scroll down to 
"虚拟键盘" and click "配置".
3. Or, click "高级" and then try to un-tick "虚拟键盘".

What is the expected output? What do you see instead?
Some configuration window will open. Or it will be disabled.
Instead the config tool crashed and return "6453 segmentation fault (core 
dumped)  fcitx-configtool". No log files are generated.

What version of the product are you using? On what operating system?
fcitx version: 4.2.8.3, on Arch Linux

Please provide any additional information below.

Attached is ~/.config/fcitx folder.

% pacman -Qs fcitx
local/fcitx 4.2.8.3-2 (fcitx-im)
    Flexible Context-aware Input Tool with eXtension
local/fcitx-cloudpinyin 0.3.3-1
    Standalone module for fcitx that uses pinyin API on the internet to provide
    additional input candidates
local/fcitx-configtool 0.4.8-1
    GTK based config tool for Fcitx
local/fcitx-gtk2 4.2.8.3-2 (fcitx-im)
    GTK2 IM Module for fcitx
local/fcitx-gtk3 4.2.8.3-2 (fcitx-im)
    GTK3 IM Module for fcitx
local/fcitx-qt4 4.2.8.3-2 (fcitx-im)
    Qt4 IM Module for fcitx
local/fcitx-qt5 0.1.1-5
    QT5 IM Module for Fcitx
local/fcitx-sogoupinyin 0.0.4-1
    Fcitx wrapper for Sogou Pinyin,thinks to Sougou

Original issue reported on code.google.com by Du9L....@gmail.com on 12 Jan 2014 at 4:31

Attachments:

• fcitx.tar.gz

[nykh]

affects me. (I want to change/disable the trigger for virtual keyboard)