Possible bug? Engraving forgets symbol

[Mat Simon]

Hi

I'm quite sure the following minimal sample gets wrongly engraved with the
latest 2.12.3  release - that is packaged in Ubuntu 10.10 (amd64)

My english in terms of musical voabulary is rather bad, I hope you
understand
what I'd like to show you, here it goes:

\version "2.12.3"
\score {
  \relative c'' {
    cis,
    c       % done right: There is "unsharp" symbol
    cis     % re-do another cis
    c'      % write c but higher this time -> annotation missing (a
musian would play a cis instead)
    }

  \layout { }
}

Unfortunately I haven't been able to compile latest stable from source
on maverick
yet. But I'd be happy to see if someone else also sees this (as a) bug
and then do another
try from source. :-)

- Mat