iron-form submitted when registered

[masonlouchart]

Description

I got this error "Form submission canceled because the form is not connected". My element that contains the iron-form is in a dom-if template. The condition is true by default so the form is displayed. But it seems automatically submitted.

I guess this line should be inside the listener. No?

Application using Polymer 1

Expected outcome

The form not automatically submitted and the warning not printed out.

Actual outcome

Browsers Affected

• Chrome
• Firefox
• Safari 9
• Safari 8
• Safari 7
• Edge
• IE 11
• IE 10