gnome-tweak-tool crashed with SIGSEGV in gtk_expander_set_label_widget()

[nelson]

the crash happens when select "Keybord & Mouse" > "Additional Layout Options" > "Key Sequence to kill the X server" and check "Ctrl + Alt + Backspace"

the crash only happened the first time... later work ok.

> lsb_release -rd
Description: Ubuntu 17.10
Release: 17.10

> apt-cache policy gnome-tweak-tool
gnome-tweak-tool:
  Installed: 3.26.2.1-1ubuntu1
  Candidate: 3.26.2.1-1ubuntu1

ProblemType: Crash
DistroRelease: Ubuntu 17.10
Package: gnome-tweak-tool 3.26.2.1-1ubuntu1
ProcVersionSignature: Ubuntu 4.13.0-16.19-generic 4.13.4
Uname: Linux 4.13.0-16-generic x86_64
ApportVersion: 2.20.7-0ubuntu3
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Sat Oct 21 22:08:06 2017
ExecutablePath: /usr/bin/gnome-tweak-tool
InstallationDate: Installed on 2017-10-21 (0 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20171018)
InterpreterPath: /usr/bin/python3.6
PackageArchitecture: all
ProcCmdline: /usr/bin/python3 /usr/bin/gnome-tweak-tool
Python3Details: /usr/bin/python3.6, Python 3.6.3, python3-minimal, 3.6.3-0ubuntu2
PythonDetails: /home/nelson/Error: command ['which', 'python'] failed with exit code 1:, Error: [Errno 2] No such file or directory: "/home/nelson/Error: command ['which', 'python'] failed with exit code 1:": "/home/nelson/Error: command ['which', 'python'] failed with exit code 1:", unpackaged
SegvAnalysis:
 Segfault happened at: 0x7f57ac2fb7bf: mov 0x8(%r13),%rdi
 PC (0x7f57ac2fb7bf) ok
 source "0x8(%r13)" (0xffffffffffffffb8) not located in a known VMA region (needed readable region)!
 destination "%rdi" ok
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: gnome-tweak-tool
StacktraceTop:
 ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
 gtk_expander_set_label_widget () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
 gtk_expander_set_label () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
 ffi_call_unix64 () from /usr/lib/x86_64-linux-gnu/libffi.so.6
 ffi_call () from /usr/lib/x86_64-linux-gnu/libffi.so.6
Title: gnome-tweak-tool crashed with SIGSEGV in gtk_expander_set_label_widget()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make this software better. This particular crash has already been reported and is a duplicate of bug #1724358, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.