German 'Ö' not working in typewriter.at

Hardware Support
21

Yes, I did clear the browser cache but no change.

22

I tried it with the attribute '-ozone-plattform=x11', but on the installed version of Zorin, it does not work. Changing the displaymanager on the loginscreen works.

23

And you used --ozone-platform=x11 (with two --)?

24

The page is cluttered with ads, maybe some browser's ad-blocker interfere with the keyboard simulator's JS ...