Dragging+snapping is sadly buggy, and also overlaps with the semantics of drag
and drop. Often I have one or more states selected and expect to be able to tap
the arrow keys to move them by one snapping unit.
Arrow keys currently are used for selection, although this is so broken perhaps
it is inherited functionality that you don't want to preserve. If you did want
to preserve it, however, you could use ctrl+arrow keys for nudge.
Original issue reported on code.google.com by
Phrog...@gmail.comon 15 Feb 2013 at 4:04