Javascript is not executed by pdf.js

[ignat-ukr]

Attach (recommended) or Link to PDF file here:
verordnungsformular_1d_0.pdf
https://www.lungenliga.ch/sites/default/files/documents/verordnungsformular_1d_0.pdf

Configuration:

• Web browser and its version: Chrome Version 124.0.6367.79 (Official Build) (64-bit)
• Operating system and its version: Windows 10 Pro Version 22H2
• PDF.js version: https://mozilla.github.io/pdf.js/web/viewer.html
• Is a browser extension: ?

Steps to reproduce the problem:

1. Open https://mozilla.github.io/pdf.js/web/viewer.html
2. Open attached PDF file in the viewer
3. Scroll to the bottom
4. Select any item from the dropdown "Verordnung senden an"

What is the expected behavior?
Text area next to dropdown is populated with respective text

What went wrong?
Nothing happens:

Link to a viewer (if hosted on a site other than mozilla.github.io/pdf.js or as Firefox/Chrome extension):