Attached is the problem in action, note especially that "Details" link does not fill up the region properly.
Nothing critical, purely visual glitch, so nothing needs to be done in a hurry. My guess (haven't actually even looked at the source yet), in fact, is probably just missing a CSS class.
I might be thinking about this too simplistic, but I don't see the difficulty in just changing the height (of the "Edit" or "Details" column) to 99%
I'm sorry if it involves more code then that :S