The more you type, the less space appears under the signature. It was like that on the old forum too but I dont think it was as extreme. I've already had Andy add extra space between the end of the post, and the signature, as you can see there is space there now which is supposed to in turn help with the space below the signature. I think the reason there is extra space now is because of the extra buttons under the avatar section. Sorry don't think anything more can be done about it. I spent a lot of time already bitching about it to Andy lol.