As demonstrated by unescaping.html. There should be no unescaping here at all, unless this is a workaround for some browser bugs, perhaps posting escaped data? That seems unlikely though.

A probably related issue I stumbled upon when making the testcase is hanging.html. Here there are 2 entities instead of 1, causing the tracklist to not load at all, indefinitely showing "Now loading tracklist..."

(All tested in Opera 11.50 alpha)