Ligature brackets and suggested accidentals don't avoid each other well

[Ben Rudiak-Gould]

% The flat symbol is unreasonably far above the note
\version "2.17.8"
{ \set suggestAccidentals = ##t \[ a'2 bes' \] }


(As a workaround, is there any way to make the brackets and
accidentals not try to avoid each other at all? This seems to be the
case with brackets and fermatas and it looks okay.)

-- Ben