Unexpected suffix in chordmode

[Nikita Borisenko]

Hi Everyone,

Can anyone please advise why the following snippet outputs G9.13 instead of
just the G13 chord name?

LILYPOND_START
\version "2.24.3"

changes = \chordmode {
   | g1:13 |
}

voice = {
    \relative c'' {
        | <g, b d f a cis e> |
    }
}

\score {
    <<
        \new ChordNames {
            \changes
        }
        \new Staff {
            \time 4/4
            \key c \major
            \clef "treble"
            \voice
        }
    >>
}
                                                                 }
LILYPOND_END

Additional detail is that G7, G9, G11 work as expected and this behavior is
special to the G13 chord. In the past it used to print G13 without the "9"
prefix. I was wondering if this was a feature introduced in one of the
recent versions, and if so what would be the right way to output the "G13"
chord name without "9"?

Sincerely,
Nikita