In a tree view list, it is possible to change the selected item by using the up/down keys on the keyboard.
**OBS:**
If the selected item is a the top of the visible items, and the up key is pressed, the displayed items move up by one line. The selected item changes to a new item, but remains as the the topmost visible item.
If the selected item is a the bottom of the visible items, and the down key is pressed, the displayed items move down by one page. The selected item does not change, but it becomes the topmost visible items.
**EXP:**
Consistent behaviour. Both should either change the view by one line, or one page. My personal preference is for both to change by one line FWIW.