Collision between dynamics and bar line in GrandStaff

[George Macon]

> I'm not top posting.

\version "2.11.45"
\paper { ragged-right = ##t }
\score {
        \new GrandStaff <<
                \new Staff \relative c' { c1 | c8\fff c2.. }
                \new Staff { R1 | R1 }
        >>
}

In this snippet, the tail of the first f in the fff goes over the bar line to
its left. I originally noticed this in a PianoStaff, but it occurs in GrandStaff
as well. This problem occurs when short duration notes come after the bar line.
(For example, if the second measure contains a whole note, it moves away from
the bar line and the dynamic does not collide.)

In case it matters, I'm running Mac OS 10.5.2.