Open https://3dflipbook.net//files/pdf-examples/safari-15.6.1.pdf with https://mozilla.github.io/pdf.js/web/viewer.html using macOS or iOS Safari. Compare result with Chrome. iOS version stops responding.
[bug report] Safari 15.6.1 does not render PDFs with PDFJS library
related issue https://github.com/mozilla/pdf.js/issues/15853