ties across \relative blocks not working

[Pedro Kroger]

Hi,

I've notice that ties aren't working across \relative blocks like:

\score {
    \new Staff \notes {
        \relative c {
            c'1 ~
        }
        \relative c {
            c'4 d e f
        }
    }
  \paper {  }  
}

The funny thing is, if I remove the first "\relative c" (and just
that) the code works fine. I'm using lily 1.9.3

Is that a bug or am I missing something?

Pedro