When I open a file (or app) from one of my stacks in my dock (Applications, Documents, Downloads etc.). The Dock goes into hiding mode (hides unless mouse is over dock area). Anyone else have this problem? EDIT: I actually don't remembering this happening since installing Lion; or I could just be enjoying Lion so much that I hadn't had the time to use Stacks! Still, does anyone else notice this problem or is it something with my Mac?