Problem with understanding results with multiple voices and Note_heads_engraver

[David Bellows]

I've attached mwe.ly and mwe.png. I'm using Lilypond 2.19.49 but I've
observed the same results in other versions including 2.18.

Before mentioning where one problem is, I suspect that I'm not
handling the multiple voices properly so that could be a problem as
well.

The offending code in mwe.ly appears to be the following:

\context { \Voice \remove "Note_heads_engraver" \consists
"Completion_heads_engraver" \remove "Rest_engraver" \consists
"Completion_rest_engraver"}

Remove this line and the it prints out as you'd expect with those two
B's as 16th notes in the lower staff. Here's the thing, the Lilypond
code is generated automatically by my software and it's rare that
notes fit within the bar lines so I always have that line included so
that Lilypond prints things out accurately no matter what happens at
bar lines (Lilypond automatically splits up and ties notes across bar
lines and it does it really, really well).

So I'm not sure if I've formed that line incorrectly or if there is
something else going on or a combination of things.

Thanks for any help,
David Bellows

mwe.ly
Description: Text Data

mwe.png
Description: PNG image