Faulty extra beam with manual beam and cross-staff stems

% Manual beams and cross-staff stems don’t seem to work together.
% Expected result: Shared stems across staves; beams above notes in upper staff only.

% I have tried all possible combinations of specifying beams and \crossStaff in the
% upper staff, the lower one and both. I always get unwanted beams in the lower staff.

% Might be related to https://gitlab.com/lilypond/lilypond/-/issues/3390

\version "2.24.1"

\layout {
  \context {
    \PianoStaff
    \consists "Span_stem_engraver"
  }
}

\new PianoStaff <<
  \new Staff \relative {
    r8 \crossStaff { e'[ e] } r
    r \crossStaff { e e } r |
    r \crossStaff { e[ e] } r
    r e[ e] r |
    r e e r
    r e[ e] r |
    r \crossStaff { e[ e] } r
    r \crossStaff { e e } r |
    r \crossStaff { e[ e] } r
    r2 |
  }
  \new Staff \relative {
    \clef bass
    \stemUp
    r8 g g r
    r g[ g] r |
    r g[ g] r
    r \crossStaff { g g } r |
    r \crossStaff { g[ g] } r
    r \crossStaff { g[ g] } r |
    r \crossStaff { g g } r
    r \crossStaff { g[ g] } r |
    r \crossStaff { g[ g] } r
    r2 |
  }
>>

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Ole V. Villumsen
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Text +45 - 30 22 29 26

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