FiguredBass Extender Lines wrong position - 2.9.26

[Trent Johnston]

Hello everyone,

When using the figured bass above the staff with extender lines and 
implicitBassFigures the the line always gets swapped around. In the example 
below both lines should be positioned on the bottom. Switching the order of 
numbers i.e. <3 7> instead of  <7 3> makes no change.

Thanks

Trent

====================
\include "english.ly"


basso = \new Voice {
\time 3/2
\relative c {
\clef bass
%bar 1
ef2 ef ef
%bar 2
d2_\markup "numbers switch <3 7> instead of <7 3>" d d
%bar 3
c1.\fermata
%bar 4
b2 b b
%bar 5
c1.\fermata
%bar 6
R1*3/2
%bar 7
c'2 c c
}}

bassfig = \figuremode {
\set Staff.useBassFigureExtenders = ##t
<3>2 <7 3> s
\set Staff.useBassFigureExtenders = ##f

\set Staff.useBassFigureExtenders = ##t
<3>2 <3 7> s
\set Staff.useBassFigureExtenders = ##f

s1.
\set Staff.useBassFigureExtenders = ##t
\set Staff.implicitBassFigures = #'(3)
<6>4 <3> <5 3>2 s
\set Staff.useBassFigureExtenders = ##f
\set Staff.implicitBassFigures = #'()
}

\score {

<<
\new Staff = "cont" << \basso \context Staff = cont \bassfig >>
> >

\layout {
       indent = 1\cm
       }

       \midi { }
    }

\paper { }