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Have a look at the bottom of this answer. You can see that the code formatting continues even after the end of the answer. This is because the elements <pre> and <code> are unclosed for some reason, as seen by the W3C validator. Note also how the three last lines of the code block are not visible. Here's a picture from my browser (Firefox 28.0):

Picture of the glitch

To me, the Markdown source of the answer seems fine, so the question is - what is causing this glitch?

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