Chord fingering orientations don't work as expected 2.13.12

[Nick Payne]

Looks like you can't have both left and right specified for fingering of 
different notes in a chord. The first \set fingeringOrientations is 
correctly engraved but the second isn't. Couldn't see anything in the 
documentation mentioning this as a known issue:

\version "2.13.12"

\relative c'' {
    \override Fingering #'staff-padding = #'()
    \set fingeringOrientations = #'(down right up)
<a-1 d-3 fis-2>1
    \set fingeringOrientations = #'(left right up)
<a-1 d-3 fis-2>
}

Nick

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