peculiar behaviour with clefs when using acciaccatura on first note in a piece.

[Maurits Lamers]

Hey all,

I noticed some unexpected behavior when using an acciaciatura on the first note 
of a piece:

\version "2.20.0"

\score {
  << 
    \new Staff {
      \clef treble
      \new Voice {
        \acciaccatura { g8 }
        g1}
      
    }
    \new Staff {
      \clef bass
      \new Voice {
       g1}
    }
  >>
}

This will cause the second staff to start with a treble clef and immediately 
after a bass clef.
Is this intended?

cheers

Maurits