I have just tested in Adobe's PDF viewer, and Preview on a Mac and it's fine.
Your PDF viewer doesn't support annotations, which is unfortunate because annotations are very much a core PDF feature.
I can see it not working in Google Chrome, but Google seem to have just fixed the bug for future versions (it'll be a few months at least I'd guess):
https://bugs.chromium.org/p/chromium/issues/detail?id=62625
Your PDF viewer doesn't support annotations, which is unfortunate because annotations are very much a core PDF feature.
I can see it not working in Google Chrome, but Google seem to have just fixed the bug for future versions (it'll be a few months at least I'd guess):
https://bugs.chromium.org/p/chromium/issues/detail?id=62625
I'll add a note in the tutorial.
https://github.com/mozilla/pdf.js/wiki/PDF-Viewer-%28Chrome-extension%29
It should solve the problem for other Chromebook users for now.