Grid DetailRow breaks Layout

Hello.

Given a HorizonalLayout with:
Label | Grid | Button

The Grid has 2 rows and DetailRows set and the Button hides/shows the Label.

If the DetailRow of the first row visible and I click the Button to hide the Label, the Grid disappears.
This does not happen if only the DetailRow of the second row is visible or none DetailRow is visible.

EDIT: this happens in 7.5.0 and 7.5.1
In 7.5.2 and 7.5.3 the Grid makes all detailRows invisible before the Label will be hidden.
Thus the Grid doesn’t dissapear anymore.

Sample Code[code]
HorizontalLayout hl = new HorizontalLayout();
hl.setSizeFull();
final Label leftLabel = new Label(“leftLabel”);
leftLabel.setSizeUndefined();

    final Grid grid = new Grid();
    Column col_a = grid.addColumn("a");
    col_a.setMaximumWidth(100);
    grid.addColumn("b");

    grid.setSizeFull();
    grid.setDetailsGenerator(new DetailsGenerator() {

        @Override
        public Component getDetails(final RowReference rowReference) {
            return new Label(rowReference.getItem().toString());
        }
    });

    grid.addItemClickListener(new ItemClickListener() {

        @Override
        public void itemClick(final ItemClickEvent event) {
            grid.setDetailsVisible(event.getItemId(), !grid.isDetailsVisible(event.getItemId()));
        }
    });

    grid.addRow("a1", "b1");
    grid.addRow("a2", "b2");

    Button hideButton = new Button("hide/show leftLabel");
    hideButton.addClickListener(new ClickListener() {

        @Override
        public void buttonClick(final ClickEvent event) {
            leftLabel.setVisible(!leftLabel.isVisible());
        }
    });

    hl.addComponent(leftLabel);
    hl.addComponent(grid);
    hl.addComponent(hideButton);
    hl.setExpandRatio(grid, 1);
    setContent(hl);

[/code]