Comment 2 for bug 1866880

Another example:

Here's a card trick I made, where the browser should speak during the trick:
http://www.lonniebest.com/CardTrick/

This speaking can be heard in both Firefox and Chrome on Windows 10. It also works in Ubuntu Firefox. However, it does NOT work in Kubuntu 19.10 Firefox (you don't hear anything). Hopefully this will be fixed by Kubuntu 20.04 LTS.