empty TTL in SOA record messed up display in zone_editor

CentOS Linux  7.4.1708 (Core)
Kernel 3.10.0-693.17.1.el7.x86_64
Apache & Varnish Cache & Nginx Reverse Proxy
Apache/2.4.29
nginx/1.12.2
PHP 7.1.9
suPHP version 0.7.2
MySQL version: 10.1.31-MariaDB
CWPpro 0.9.8.458
SEL disabled
Mod Security disabledBIND correctly validates the record ok but the zone_editor mask is messed up