DNS - Perl error when performing a mass record change

ERROR MESSAGE:

Update Records in Zones Updating records in zone test.com .. HTTP/1.0 500 Perl execution failed Server: MiniServ/1.821 Date: Wed, 28 Dec 2016 17:42:04 GMT Content-type: text/html; Charset=iso-8859-1 Connection: close Error - Perl execution failed Can't use an undefined value as an ARRAY reference at /usr/libexec/webmin/bind8/mass_update.cgi line 73.

HOW TO REPRODUCE:

In Webmin -> Servers -> Bind DNS

Select multiple zones -> "Update Records In Selected", make a change and then "Change Records".

Editing a zone individually works, however performing multiple zone updates fails.