Screen drawn error.

Since I upgraded to Vaadin 8 (I currently have vaadin 8.1.4), I have an error in the redraw of the screen, when I update a value from a ValueChangeListener and the visual component it is in a HorizontalLayout.
This happens with any browser.
I Attached 2 images so you can see what happens when I change the TextField value b.
This only happens if the Textfield b has no caption or i have more component in HorizontalLayout without caption, and one component in horizontal layout is expanded

A greeting.

VerticalLayout vLayout= new VerticalLayout();
HorizontalLayout hLayout= new HorizontalLayout();
hLayout.setWidth("100%");

TextField a= new TextField();
a.setWidth("100%");

TextField b= new TextField();// important textfield without caption

vLayout.addComponent(hLayout);
hLayout.addComponents(a,b);

hLayout.setExpandRatio(a, 1f);// important layout with expandRatio

b.setValueChangeMode(ValueChangeMode.BLUR);
b.addValueChangeListener(e->{
	b.setValue(e.getValue().toUpperCase());
});		
setContent(vLayout);

17041982.jpg
17041985.jpg