webapp-container crashed with SIGABRT in QMessageLogger::fatal() in VirtualBox

Start a web application like GMail results in a crash of webbrowser-app on Trusty (only in VirtualBox)

ProblemType: Crash
DistroRelease: Ubuntu 14.04
Package: webapp-container 0.23+14.04.20140403-0ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-19.40-generic 3.13.6
Uname: Linux 3.13.0-19-generic x86_64
ApportVersion: 2.14.1-0ubuntu1
Architecture: amd64
CrashCounter: 1
CurrentDesktop: Unity
Date: Sat Apr 5 14:20:20 2014
ExecutablePath: /usr/bin/webapp-container
InstallationDate: Installed on 2014-04-04 (0 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Beta amd64 (20140326)
ProcCmdline: webapp-container --app-id=Gmailmailgooglecom --webapp --enable-back-forward https://mail.google.com
ProcEnviron:
 LANGUAGE=fr_FR
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=fr_FR.UTF-8
 SHELL=/bin/bash
Signal: 6
SourcePackage: webbrowser-app
StacktraceTop:
 QMessageLogger::fatal(char const*, ...) const () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
 ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqxcb.so
 ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqxcb.so
 QOpenGLContext::create() () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
 BrowserApplication::initialize(QString const&) ()
Title: webapp-container crashed with SIGABRT in QMessageLogger::fatal()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo