My full signature is being pasted automatically into the comment textarea, which is a bit annoying.

It is not a real problem, as I always can just remove the text and start with an empty textarea. But it is still annoying.

I would expect the comment textbox to be empty at the beginning. But to me, the textbox contains this:

This is exactly my current signature. As the signature is already appended to my post, independently of content, this is not neccessary. If I'd keep that text in the textbox, it'll just result in two identical signatures.