Click outside combo box closes paper-dialog

[bramkragten]

Description

I'm seeing the same problem as mentioned before in #405

When embedding a vaadin-combo-box in a paper-dialog without setting no-cancel-on-outside-click, the dialog closes when the combo box is opened and closed by clicking on the dialog.

Using:
@polymer/paper-dialog@3.0.1
@polymer/iron-overlay-behavior@3.0.2
@vaadin/vaadin-combo-box@5.0.6

Expected outcome

Combo box closes. dialog stays open.

Actual outcome

Dialog closes

Live Demo

Steps to reproduce

1. Put a vaadin-combo-box element in a paper-dialog.
2. Open the page in a web browser.
3. Click the input of vaadin-combo-box element.
4. Click on the paper-dialog

Browsers Affected

• Chrome
• Firefox
• Safari
• Edge
• IE 11
• iOS Safari
• Android Chrome

[web-padawan]

Closing as outdated and because Paper Elements are now deprecated.
Let's submit a new issue if this turns out to be a problem also with mwc-dialog.