Comment 3 for bug 1865337

Hi!

Sorry for the late answer. Here is the return for `vlc --version`. The issue is relatively difficult to reproduce: I have a set of mkv/webm files that do it all the times, but if I set-up VLC with other files (mp3), the issue does not appear.

```bash
$ vlc --version
VLC media player 3.0.8 Vetinari (revision 3.0.8-0-gf350b6b5a7)
VLC version 3.0.8 Vetinari (3.0.8-0-gf350b6b5a7)
Compiled by buildd on lcy01-amd64-014.buildd (Sep 11 2019 11:39:37)
Compiler: gcc version 7.4.0 (Ubuntu 7.4.0-1ubuntu1~18.04.1)
This program comes with NO WARRANTY, to the extent permitted by law.
You may redistribute it under the terms of the GNU General Public Licence;
see the file named COPYING for details.
Written by the VideoLAN team; see the AUTHORS file.
```

I was also able to reproduce the issue with LibreOffice: I launched LibreOffice, then switched workspace. Once LibreOffice was ready, it appeared “by surprise” in the Alt+Tab menu of another workspace.

VLC and LibreOffice are both large softwares: maybe they both launch some kind of global instance in addition to the windows, and it is this global instance that trigger the Alt-Tab notification? I can’t tell, apart from the fact that each time this happens, I’m being caught by surprise 😅​

I attaching the logs. At the time 11:50, it was VLC doing the Alt+Tab appearance in another workspace, and at 11:54, it was LibreOffice.

I will try to reproduce the issue in a newly created session. ☺

Have a nice day ☺
Martin.