I found a cornucopia on the haunted house page and picked it up. Now after searching on a tile, whenever I hit "Close", it tells me "To display this page, Firefox must send information that will repeat any action (such as a search or order confirmation) that was performed earlier." Resending that gives me an on-site error that "this entry has expired".

I exited the haunted house page and went back in from the fest menu, and that seems to have fixed it. But it was a little weird :P a very rare concurrence of events there, lol