[paper-listbox::_flattenBehaviorsList]: behavior is null, check for missing or 404 import polymer-micro.html:277
[paper-item::_flattenBehaviorsList]: behavior is null, check for missing or 404 import polymer-micro.html:277
[paper-button::_flattenBehaviorsList]: behavior is null, check for missing or 404 import
Hi, if i load this element with async attr like:
i get in chrome a warning but not in FF:
Browsers Affected