Auto beaming problem with partial measure

[Roy . Rankin]

In the following example when run in 1.3.188 the autobeaming of the
first partial measure is not the same as subsequent measures.

Regards,
Roy Rankin



\include "paper20.ly"
Sopnotes = \notes {
        \time 4/4;
        \key g \major;
        \clef treble;
        \partial 8 * 3;
        e'8 f'8 g'8 |
        d'8 d'16 d'16 e'8. e'16 g'8 g'8 f'8 f'8
}

\score {
        \notes
        <
                \context Staff="sop"
                <
                    \$Sopnotes
                >
        >
        \paper {
                \translator {
                 \StaffContext 
                        autoBeamSettings \override #'(end * * * * ) = #(make-moment 1 
8)
                }
        }
}