On some computer, the URL relationship editor does not react.
Internet Explorer 11 and Chrome 54 on both Windows 7 and Windows 10 Laptop computers, strange enough on Desktop computers no problem. Having turned on/off Windows Firewall seems to make no difference, as well as using different anti virus programs make no difference.
Apparently no JavaScript error thrown.
When we type text it reacts but when we type a duplicate URL for instance, it does not say anything and the field label is not updated, it remains as "Add another link:".
On "OK" browsers, it both says it's a duplicate URL and sets its type.

cf. https://community.metabrainz.org/t/bug-about-stand-alone-video/162275/8