Thread:Talk:WikiLove/WikiLove sometimes hangs, doesn't refresh or close after posting

I did a few test actions on Prototype, and found some weird behavior... the loading animation next to the "Send WikiLove" button just kept going and going, without closing or refreshing the page. When I closed the dialog and reopened it, the same message I had before loaded again (already previewed) with the animation still spinning. After manually refreshing the page, I found that a new message had been posted each time I pressed send.

This appears to be happening to many people, given the prevalence of duplicate posts on http://prototype.wikimedia.org/release-en/User_talk:Georgewiki

Also, the preview often takes much longer than it should to load, sometimes over 10 seconds.