Accidental placement when some accidentals are suppressed

[Timothy Lanfear]

> I'm not top posting.

If I suppress some accidentals of a chord with \single \omit (which will
make sense in the context of the score I am setting), the remaining
accidentals are placed as if the suppressed accidentals are still present.
Is this the expected behaviour?

\version "2.17.20"

\layout { \accidentalStyle neo-modern }

\relative c' {
  <cis eis gis>1
  <\single \omit Accidental c e \single \omit Accidental g>1
}