Assets widget displaying twice on ticket display page

A fresh installation of RT 4.4.1 with RTIR 4.0 on Ubuntu 16.04 LTS is displaying the “Assets” widget twice when viewing the ticket Display page after installing the Assets 1.05 extension. I haven’t actually added any content to the Assets, yet; this is right after a clean installation.

If I comment out the Plugin line in the RT_SiteConfig.pm file, both “Assets” sections go away; but, if the line is not commented out, both widgets display.

I found the file that the code is being inserted from, I believe --> /opt/rt4_test/share/html/Ticket/Elements/ShowAssets

I haven’t figured out why the “Assets” title and “Add an asset to this ticket” input is being doubled.

Below is how the extension was installed

$ cd /home/Plugins-test
$ sudo wget https://download.bestpractical.com/pub/rt/release/RT-Extension-Assets-1.05.tar.gz
$ sudo tar -xzvf RT-Extension-Assets-1.05.tar.gz
$ cd RT-Extension-Assets-1.05
$ sudo perl Makefile.PL
        Path to directory containing your RT.pm: /opt/rt4_test/lib
$ sudo make
$ sudo make install
$ sudo make initdb
$ sudo vi /opt/rt4_test/etc/RT_SiteConfig.pm
        #Add the following line
        Plugin( “RT::Extension::Assets” );

Clear Mason cache
$ sudo rm -rf /opt/rt4_test/var/mason_data/obj/*

Restart webserver
$ sudo service apache2 restart