VLC Strean video into file doesn't work

[Bernard Decock]

VLC -> Media -> Open Network Stream
Enter the URL of the video, eg. URL of a YouTube-video
Select Stream
Add file, eg. Test.mp4
Select profile, eg. Video H.264 + MP3
Stream

VLC starts to play the video, the file Test.mp4 will have only 159 bytes.
Streaming works in Ubuntu 17.10, but not in 18.04

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: vlc 3.0.3-1-1ubuntu1
ProcVersionSignature: Ubuntu 4.15.0-33.36-generic 4.15.18
Uname: Linux 4.15.0-33-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.2
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Sun Aug 26 10:30:48 2018
InstallationDate: Installed on 2018-08-26 (0 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
SourcePackage: vlc
UpgradeStatus: No upgrade log present (probably fresh install)