[combo-box] Add option for auto-focusing first matching item [2 days]

[fagnercarvalho]

Description

The vaadin-combo-box element is not selecting the filtered option after tabbing out of the field.

Expected outcome

The current value should be selected when tabbing out.

Actual outcome

The current value is not selected.

Live Demo

There is no live demo for this issue, sorry. However I recorded a short video showing the issue.

Steps to reproduce

1. Put a vaadin-combo-box element in the page.
2. Open the page in a web browser.
3. Search for a valid option in the combo box but don't select this option.
4. Tab out of the field.

Browsers Affected

• [X] Chrome (only browser I tested)
• [ ] Firefox
• [ ] Safari
• [ ] Edge
• [ ] IE 11
• [ ] iOS Safari
• [ ] Android Chrome