printed album looks different from PDF export

When printing an album, noteheads and pauses look much thicker than when exporting the individual member scores as PDF (and possibly concatenating them together, but the bug appears without concatenating).

Steps to reproduce:

1. create a test score, save, export as PDF
2. create a new album, add the score, print it, choose "Print as PDF" as faux printer
3. compare the PDFs at the same zoom (e.g. full-screen mupdf fit to page height)

I’ve attached the test files (album, score, exported score PDF) and the album print, for visual confirmation.