RE:combining simultaneous notes

[Stephen MacNeil]

The example works on

\version "2.18.2"

so i guess it's a "2.19.22" issue

I tested it on lilybin and this works in "2.19.21.... for your example anyway. not sure of "2.19.22" as i don't have it

\version "2.19.21"
aa={a4 b a b}
bb={a4 g a g}
\new Staff {
<<
  \aa\\
  \stemUp\bb
>>
}
\new Staff{
a4 <g b> a <g b>
}

HTH

Stephen