gnome screencast stops after 30 seconds

When I start screencast by pressing Alt+Ctrl+Shift+R, it auto-stops itself exactly after 30 seconds. That is highly unexpected, there is no explanation as to why the sudden stop. That leaves me confused as an user.

Workaround is to increase the screencast max duration:
https://coderwall.com/p/aluafg/gnome-record-desktop-30s-limit

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: gnome-shell 3.27.92-0ubuntu1
ProcVersionSignature: Ubuntu 4.15.0-10.11-generic 4.15.3
Uname: Linux 4.15.0-10-generic x86_64
ApportVersion: 2.20.8-0ubuntu10
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Fri Mar 16 08:58:15 2018
DisplayManager: gdm3
GsettingsChanges:
 b'org.gnome.shell' b'enabled-extensions' b"['<email address hidden>']"
 b'org.gnome.shell' b'command-history' b"['r']"
 b'org.gnome.shell' b'favorite-apps' b"['firefox.desktop', 'rhythmbox.desktop', 'org.gnome.Nautilus.desktop', 'org.gnome.Software.desktop', 'yelp.desktop', 'chromium-browser.desktop', 'thunderbird.desktop']"
 b'org.gnome.desktop.interface' b'gtk-im-module' b"'gtk-im-context-simple'"
 b'org.gnome.desktop.interface' b'scaling-factor' b'uint32 1'
InstallationDate: Installed on 2016-09-05 (556 days ago)
InstallationMedia: Ubuntu-Server 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
SourcePackage: gnome-shell
UpgradeStatus: Upgraded to bionic on 2018-03-13 (2 days ago)