Exposé no longer respects the relative sizes of windows
Although Exposé has been vastly improved in Snow Leopard, Apple did let go of one of its great qualities in doing so. Under Leopard, although the windows were haphazardly thrown together instead of being neatly organized in a grid, they were all displayed at relatively correct sizes. So if you had a long and narrow Safari window beside a shorter and wider one for Mail, they would retain their relative dimensions even in their pint-sized Exposé thumbnails.
Not so in Snow Leopard. As shown in the screenshot above (click on it to enlarge it), the thumbnails of windows in Snow Leopard occupy the maximum space their position in the grid allows them, which means that if you have two windows that have about the same aspect ratio but are of very different sizes, they’ll appear to be of exactly the same size in Exposé mode (although you can roll your mouse over them and hit Spacebar to quickly blow them up to their actual size).
I love the new Exposé in Snow Leopard but this is one change that has had me searching for the right window and being confused by others that looked like it on more than one occasion.
Oh yes indeed. And then take a small, yet very skinny window like my Adium contacts list and it shows up much larger than my large Firefox or Mail windows. It drives me batty.
