Try to select a different sidebar view with just one click, by dragging to select a view. Actual: It is not possible, as the list of view doesn't open until the mouse button is released. Expected: Other pickers (e.g., in the address bar, or a web page's picker) offer that option, i.e.: 1. Press the mouse button 2. List is displayed 3. Move the mouse (with button still pressed) to preferred item 4. Release button to select item under mouse