Numerical text in graphs disappears in Keynote PDF output

When I output a document created in keynote to PDF, there is a phenomenon where the numerical labels on some graphs disappear.

Has this problem been reported?

This problem has continued since upgrading to macOS 15 (Sequoia) around December 2024.

See attached images

1st capture: PDF after export

2nd capture: Keynote document

macOS: Sequoia 15.3.2

Font used: Yu Gothic.