Comment 6 for bug 1808123

Description:
As described above. I work in the classroom with my notebook, to which I have connected a beamer. Sometimes I write things down in the Writer and show it via the beamer. I would like to use the fullscreen mode here.
Unfortunately, the fullscreen mode is always displayed on the internal monitor, even if the window with the Writer maximized was previously displayed on the beamer.
Other apps like Firefox, Chromium and Gedit are working fine.

Steps to Reproduce:
1. Connect your notebook to an external monitor
2. Open a LibreOffice-window on the external monitor
3. Use the fullscreen-mode ->

Actual Results:
Fullscreen will appear on internal monitor

Expected Results:
Fullscreen mode should be opened on the monitor the window was on before

Reproducible: Always

User Profile Reset: No

OpenGL enabled: Yes

Additional Info:
I've already opened a bugreport on Launchpad:

https://bugs.launchpad.net/ubuntu/+source/libreoffice/+bug/1808123

Version: 6.1.2.1
Build-ID: 1:6.1.2-0ubuntu1.1
CPU-Threads: 8; BS: Linux 4.18; UI-Render: Standard; VCL: gtk3;
Gebietsschema: de-DE (de_DE.UTF-8); Calc: group threaded