Scratch

This is a problem with the forums which I noticed.
Although the correct use of blocks in the forums requires the [blocks] and [/blocks] tags, too many people forget to use them.

However, the forums put the [blocks] tag in for you just before a block. But they don't end it either.

I understand this could be a problem in the middle of a post because you wouldn't know where to end it, but you should at least make sure it does not carry on into the signature's formatting, like I saw in this post. Comparison to the same non-formatted sig here.