I appreciate your well designed implementation of the UnloadObserver. I’m one of the people you mention as original authors of that part, but you obviously made it better in every aspect. Well done! But I have the issue that the eventlistener for ‘beforeunload’ on window is not removed when detached. I made a [pull request]
(https://github.com/vaadin-miki/super-fields/pull/205) for this.
Thanks!
Thank you, Kaspar, for your kind words!
I will look into the issue and it will be included in the next release (0.8.1 most likely).