Viewing multiple videos fullscreen will sometimes block the image

[Pedro Côrte-Real]

When viewing multiple videos fullscreen in sequence the image sometimes block. Here are the steps to reproduce:

1. Create a folder with multiple videos in any format
2. Launch vlc by running something like "vlc *.mp4"
3. Make the video fullscreen by pressing F
4. Skip through to other videos by pressing N

At this point most videos will work fine but sometimes the video will change and then stop. The interface becomes completely unresponsive to N/F/Space. Doing Alt-Tab seems to reveal that the video has actually been playing as the interface is now responsive and the video is farther ahead.

I don't know if this is a VLC or gnome-shell/mutter bug

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: vlc 3.0.2-0ubuntu0.1
ProcVersionSignature: Ubuntu 4.15.0-24.26-generic 4.15.18
Uname: Linux 4.15.0-24-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.2
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Fri Jul 20 14:20:36 2018
InstallationDate: Installed on 2018-05-31 (50 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
SourcePackage: vlc
UpgradeStatus: No upgrade log present (probably fresh install)