I know this is an old thread but I see the same behavior as the OP but I don't see an answer. I did notice that as soon as I grab the window frame to manually adjust the size, the scrollbar disappears and the blue vertical line indicator appears (which is what the behavior should be to begin with). This is really screwy!!!
I just upgraded to SE 2011 (I know even that's old) and my old resize.e macro doesn't work as it did in SE 2007. It won't adjust the height or width correctly. It ends up making the width of the window appear as described above and won't adjust the height at all. Sigh...