When selecting a folder in my favorites, then typing part of a file/folder name to go to an item in the content pane, the item will be selected, but the blue border to indicate focus is still around the favorites pane. So, if I use the arrow keys to go to the next item in the content pane, it goes to the next item in the favorites pane. The folder pane has different functionality. Selecting a folder in the folders pane and then typing or using the arrow selects a new item in the folder pane and doesn't affect the content pane. There is also no way to navigate to or change focus to the content pane using the keyboard. The mouse must be used to change the focus to the content pane.