when starting edit with space, editor content is replaced by " " (= space), happens only if the cell has been in editing state before

Seen for ListView, Tree/TableView (not TreeView which doesn't seem to have a binding of space to activate?).

Might be similar as the second part of JDK-8089020 (though in that issue it seems to have happened always).

Reproducible (haven't checked others): fx11, fx17, current fx18dev

To reproduce, run the example
- start/terminate edit on a cell (doesn't matter by which means)
- start edit on the same cell by space
- expected: editor contains the item at the index
- actual: editor contains a single (unselected) space

Example code:

public class ListTextFieldStartEdit extends Application {
    
    int count;
    private Parent createContent() {
        ObservableList<String> items = FXCollections.observableArrayList(
                Stream.generate(() -> "item" + count++)
                .limit(50)
                .collect(Collectors.toList()));
        ListView<String> list = new ListView<>(items);
        list.setEditable(true);
        list.setCellFactory(TextFieldListCell.forListView());
        
        VBox content = new VBox(10, list);
        return content;
    }

    @Override
    public void start(Stage stage) throws Exception {
        stage.setScene(new Scene(createContent()));
        stage.show();
    }

    public static void main(String[] args) {
        launch(args);
    }

}