I think the extension just didn't popup because I already tried it before and clicked on "remember my choice"

I thought I just clicked on cancel + "remember my choice" so it did not have permission and wasn't able to prompt me anymore. Would at least be the easiest explanation

But just tested it again and it didn't work even with giving all permissions. Will record a new video now with the browser console open

update: mhh, wasn't able to reproduce. Works now: https://files.ekzyis.com/public/pulsar2.mp4