Scrolling issues with Icedove

[A Debian User <debian@openmailbox.org>]

When you open an email in a tab, scroll down, then leave it (remove 
focus from it), when you come back, you'll see that it's returned to the 
top of the email (has scrolled back all the way up).

What gives? Shouldn't you get to go back where you left off?

Thanks.