DU4 browser behavior change?

Generally in most browsers & on DU3, when you start a post (or reply), then you click another link before posting that post, then you click the browser back button to get back to your post, your text will still be there in Discussion title & Discussion text boxes. Now, the text in Discussion title is gone, although the text in the Discussion text box is still there. Unless there's a reason for the change, it's kind of a pain.

I use Opera & Chrome for DU.

Home page looks great, btw!!