panel as desktop bar only, and maximize windows
when an horizontal panel is changed as "desktop bar" and there is no extra panel, maximizing a window is keeping a space where the panel was when it was horizontal. For example, i had my panel horizontally, nearly 50 px heigh. I changed it to "vertical desktop bar". Now if for any normal window, like thunar, geeqie, firefox, if i maximize these windows i will have an horizontal space of 50 px between the bottom of the window and the bottom of the desktop space, i.e the screen.