Quassel IRC

When I connected to my system with Ubuntu through the x2go client which is running on Windows 8.1, Quassel fails to start with the following error:

/home/user1# quassel
failed to get the current screen resources
Quassel IRC: "0.12.4" "90183eeb030dd4dda32e4f107e8bcf13f393388d"

1. 0 quassel 0x000055b0b8ef282c Quassel::logBacktrace(QString const&)
2. 1 quassel 0x000055b0b8eca239 Quassel::handleSignal(int)
3. 2 libc.so.6 0x00007fb1e35267f0 0x0000000000000000
4. 3 libqxcb-glx-integration.so 0x00007fb1cf72e1c9 0x0000000000000000
5. 4 libQt5XcbQpa.so.5 0x00007fb1d30eb576 QXcbWindow::create()
6. 5 libQt5XcbQpa.so.5 0x00007fb1d30d78c0 QXcbIntegration::createPlatformWindow(QWindow*) const
7. 6 libQt5Gui.so.5 0x00007fb1e53800c9 QWindowPrivate::create(bool)
8. 7 libQt5Widgets.so.5 0x00007fb1e5b45585 QWidgetPrivate::create_sys(unsigned long long, bool, bool)
9. 8 libQt5Widgets.so.5 0x00007fb1e5b44d7d QWidget::create(unsigned long long, bool, bool)
10. 9 libQt5Widgets.so.5 0x00007fb1e5b451e9 QWidget::winId() const
11. 10 libKF5XmlGui.so.5 0x00007fb1e7668b32 KMainWindow::applyMainWindowSettings(KConfigGroup const&)
12. 11 libKF5XmlGui.so.5 0x00007fb1e766900b KMainWindow::setAutoSaveSettings(QString const&, bool)
13. 12 quassel 0x000055b0b8caf64e MainWin::init()
14. 13 quassel 0x000055b0b8cb37f4 QtUi::init()
15. 14 quassel 0x000055b0b8c5b95d 0x0000000000000000
16. 15 quassel 0x000055b0b8c5aa74 MonolithicApplication::init()
17. 16 quassel 0x000055b0b8c58348 main
18. 17 libc.so.6 0x00007fb1e35113f1 __libc_start_main
19. 18 quassel 0x000055b0b8c59f69 _start

Server side configuration (all packages are Ubuntu distributive packages):
Ubuntu 17.04
Desktop environment: MATE
x2go server: 4.0.1.20

Client Side:
Windows 8.1
x2go client: 4.1.0.0
Windows X server: cygwin x64 2.8.0