Hey
Thank you for the extremely speedy response. The update you released fixed the default behavior to work as intended.
As to the pdf.js, looking through the scripts on various parts of the sites, I only see the pdf.min.js (version 2.0.38) being used, but I didn’t encounter any other scripts that appear to be calling pdf.js. It should be mentioned that I have not seen the error on my own pcs, only colleagues.
Elementor does call the webpack, but a brief search didn’t reveal any PDF.