> I've been wrestling with this mystery for some hours. I've finally > found how to trigger it. The multimeasure rest causes the > duplication of the rests in the display in previous measures. A > non-multimeasure rest does not result in the weird duplication. If > this is a known issue I missed the notice.
It's a bug, now filed as https://gitlab.com/lilypond/lilypond/-/issues/6692 Thanks for the report. Werner
