warning shown with perl v5.22.1 (xenial)

Importing MP3::Tag, e.g.:

    perl -e 'use MP3::Tag;'

results in the warning message:

    Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/(\\%(?:\\=)?(\w|\\{ <-- HERE (?:\w|\\[^\w\\{}]|\\\\\\[\\{}])*\\}|\\\W))/ at /usr/share/perl5/MP3/Tag.pm line 2611.

There is a new version v1.14 available on CPAN, which does not have this bug.

Distributor ID: Ubuntu
Description: Ubuntu 16.04.3 LTS
Release: 16.04
Codename: xenial

This is perl 5, version 22, subversion 1 (v5.22.1) built for x86_64-linux-gnu-thread-multi
(with 58 registered patches, see perl -V for more detail)