Comment 0 for bug 1804786

Garbage occurred when Playing the video in the Ubuntu Desktop Guide.

Reproduce step
1. Ubuntu 18.04.1.
2. ubuntu-docs 18.04.4
3. Playing the video(Launch applications) from Help-->Getting started with GNOME.
4. Garbage occurred after the video repeat about 3 times==> issue.

Expected results: The Video can be played normally no-matter how many times.

Actual results: Garbage occurred after the video repeat about 3 times

Note:
1. the video will show blank but still have the voice after the issue finish.
2. Zooming in and out of the app has garbage too.
3. Right click the mouse and choice "save video as", this application will crashed

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubuntu-docs 18.04.4
ProcVersionSignature: Ubuntu 4.15.0-39.42-generic 4.15.18
Uname: Linux 4.15.0-39-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.4
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Fri Nov 23 16:46:00 2018
InstallationDate: Installed on 2018-04-30 (206 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
PackageArchitecture: all
SourcePackage: ubuntu-docs
UpgradeStatus: No upgrade log present (probably fresh install)