Gábor,
Thank you for the nice add-on.
I would just like to report a bug inside
com.vaadin.addon.leaflet4vaadin.layer.LayerPopupFunctions, namely both openPopup versions do call closePopup instead of openPopup. E.g.:
default void openPopup(LatLng latLng) {
executeJs("closePopup", latLng);
}
SV