Embedded artwork containing the characters "back" does not display. in Album browser

I am using EasyTAG to add embedded album art to my mp3 files.

I have found that some of the tagged albums do not show artwork in the gnome-music album browser but are OK in Nautilus file browser.

After some testing I have found that if the Album art filename that is used to tag the file contains the word "back" it does not appear in gnome-music album browser.

$ lsb_release -rd
Description: Ubuntu 16.04 LTS
Release: 16.04

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: gnome-music 3.18.2-1ubuntu1
ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8
Uname: Linux 4.4.0-22-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
CurrentDesktop: GNOME
Date: Tue Jun 7 22:21:03 2016
ExecutablePath: /usr/bin/gnome-music
InstallationDate: Installed on 2016-06-03 (3 days ago)
InstallationMedia: Ubuntu-GNOME 16.04 LTS "Xenial Xerus" - Release amd64 (20160421)
InterpreterPath: /usr/bin/python3.5
ProcEnviron:
 LANGUAGE=en_GB:en
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SourcePackage: gnome-music
UpgradeStatus: No upgrade log present (probably fresh install)