Violating security check on createElement("object")

[AndreyChernykh]

We are up to using Polymer Dart to create Microsoft Office Task Pane Application. It uses Internet Explorer & Edge to render pane. But because of

// webcomponents.js 
var elementsWithFormProperty = [ .... HTMLObjectElement, .... ]

and

// webcomponents.js 
var elements = {
...
object: "HTMLObjectElement",
...

pane shows security warning:

an add-on for this website failed to run. check the security settings

Possible solution:
If the browser is IE, do not create HTMLObjectElement

[jakemac53]

This project just packages up https://github.com/webcomponents/webcomponentsjs as a dart package, I would recommend posting your issue there and then we can update to get the changes once the issue is resolved.

[AndreyChernykh]

Ok. Done webcomponents/webcomponentsjs#412