Using a mouse and selecting first row from below causes scrolling

[henrikvilhelmberglund]

Using a mouse and selecting first row from below causes scrolling. Scrolling should probably start when the cursor is above the first row instead of on it.

Repro:

1. Start dragging from the middle of the screen.
2. Move the cursor to the first row.
   Result: Screen starts scrolling.
   Expected: The first row is selected without scrolling.