Expandable edit box in My Blog

Using Chrome (I think this might be a feature exclusive to Chrome) ....

I hope I can explain this properly...

When I go to edit something, in the lower right hand corner, there's a corner that's draggable. For example, when posting in the forum, I can expand the box that I'm typing in to as big or small as I want it to be. Which is cool. And was always available on the old site.

However, when I do this from My Blog, the corner that's draggable only increases white space around the box that I'm typing in -- it doesn't allow me to see any more of the text than what is shown by default.

Since I tend to go on and on and on in my blog (one of these days I'll try being brief and succinct!), it would be great to have this function back.