2.7.4: serious tuplet bug

[Graham Percival]

The recently released 2.7.4 sometimes has a huge space between
notes and the tuplet beam.  This only occurs with certain notes;
the first two lines below cause it, but the third line does not.

HTH,
- Graham

\version "2.7.4"
\layout{raggedright=##t}
\relative c'' {
\times 2/3 { c4 d e} d2
\times 2/3 { d4 e f} e2
\times 2/3 { e4 f g} f2
}