Fullscreen vlc sometimes freezes until you Alt-Tab away and back from the window

[Pedro Côrte-Real]

There seems to be a bug, which I assume is in mutter, when viewing multiple vlc videos fullscreen. The steps to reproduce are simple:

1. Open a bunch of videos in vlc in sequence with something like "vlc *" in a directory full of video files
2. Press N to move to the next video before it finishes (if you have short videos I don't think this is even needed, just let the videos finish)
3. Notice that sometimes the video freezes right after starting but if you open the activities or Alt-Tab away and back the video has been playing and will resume

I've only noticed this bug in VLC but assume it's most likely a mutter or gnome-shell issue so I filed it in mutter.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: mutter 3.28.3-2~ubuntu18.04.2
ProcVersionSignature: Ubuntu 4.15.0-43.46-generic 4.15.18
Uname: Linux 4.15.0-43-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.5
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Thu Dec 27 09:41:40 2018
InstallationDate: Installed on 2018-05-31 (209 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
SourcePackage: mutter
UpgradeStatus: No upgrade log present (probably fresh install)

[Pedro Côrte-Real (pedrocr)]

This is most likely a vlc bug and should be reassigned to it. I am experiencing it in VLC under sway so unless the same bug exists across sway and mutter it's probably a vlc thing.