Blurring an empty TextField (without doing anything in the field) causes a server visit

[mstahv]

Description of the bug

Blurring an empty TextField (without doing anything in the field) causes a server visit

Expected behavior

There should be no obsolete server visits.

Minimal reproducible example

Use this UI, click text field and document body repeatedly, watch the show in web inspectors network tab.

@Route
public class MainView extends VerticalLayout {

    public MainView() {
        TextField textField = new TextField();
        add(textField);
    }
}

Versions

Vaadin: 24.1.4
Flow: 24.1.5
Java: Eclipse Adoptium 17.0.2
OS: aarch64 Mac OS X 13.5
Browser: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/115.0.0.0 Safari/537.36
Live reload: Java active (Spring Boot Devtools): Front end active

[knoobie]

Doesn't the dirty flag already fixes this? Or does this still happen with the new flag? vaadin/web-components#6160

Edit: more information about the flag here: vaadin/flow-components#5712 which describes exactly your problem that leaving the field causes a server rountrip with no change

[TatuLund]

Related to vaadin/flow-components#4986

[caalador]

As the event is a validated event let's see what happens after the components validation logic update.

[vursen]

The issue will be resolved as part of vaadin/flow-components#5537.

[yuriy-fix]

The issue is resolved as a part of #5537. Fix is available in 24.3.0-beta1.
DateTimePicker behaviour will be tackled separately.