Why in the everloving fuck do so many sites insist on rolling their own text input widgets? They're inevitably slower than normal ones (Last.FM really took the cake here for a while, with a text widget that would make a network call for every letter typed just so it could display a little "376/500 characters" thing) and usually glitchy. The vanilla text boxes work fine! Use them!
The threads in the support forums indicate that this problem has been around for the last couple of months, and are full of people saying that they've gotten no response from tech support.