default stem direction

[David Raleigh Arnold]

Is it advisable to leave the stable version now and upgrade?
I searched the changelog for \stem and didn't find anything.

\header {
\version "2.2.5"
}
\score { \notes {
    \context Voice = voiceUno{
    \relative c' {
c4 d8 e f g a b 
c e, f g a b c d
e g, a b % <- group has wrong stem direction
 c d e f
g f e d c b a g
e' d }
   }
}}

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