List of steps to reproduce

• Enter the following into the MediaWiki editor:

<score language="lilypond" raw="1">
\header {
	tagline = ##f
}
\language "deutsch"
\relative {
	\autoBeamOff
	\override Stem.neutral-direction = #up
	r4 a'8 b
}
</score>

What happens?:
The stem of the second tone is facing downwards.

What should have happened instead?:
The stem of the second tone should be facing upwards; due to the command:

\override Stem.neutral-direction = #up

• When compiling the same data the usual way, with the LilyPond application, that error does not occur. The stem of the second note is rendered facing upwards.

Software version (if not a Wikimedia wiki), browser information, screenshots, other information, etc:

• LilyPond version 2.22.1