LSR #983 produces strange result

Please have a look at https://lsr.di.unimi.it/LSR/Item?id=983 This code has obviously worked some time before, but it no longer doesn't. Is this a problem with the code or a bug? Werner

LilyPond 2.25.4

We are happy to announce the release of LilyPond 2.25.4. This is termed a development release, but these are usually reliable for testing new features and recent bug fixes. However, if you require stability, we recommend using version 2.24.1, the current stable release. Please refer to the Installi