Flinging just did not work for me in the web version, but worked fine in the download. In case anyone else has trouble with it.
Thanks for playing and thanks for reporting that issue. We‘ll look into it. Probably a browser issue though :/
Thanks again for reporting the issue, and especially for finding and sharing the workaround!
I've added the issue to our github.
https://github.com/godot-wildlings/gwj8/issues/23