Go to http://test.musicbrainz.org/url/c68189d3-184b-4347-9e68-d39b1bcae63b/edit and paste a URL that needs cleaning up, e.g. this URL from IRC yesterday - http://www.amazon.com/Folksongs-From-Bavaria-Graf/dp/B000001VM3

Expected result: It should be cleaned up/standardised and turned into http://www.amazon.com/gp/product/B000001VM3
Actual result: Nothing happens.

It used to work fine until recently and I don't see any errors in the error console, it's just stopped doing anything at all, both in Opera and Safari.