dart - Dart2JS extended td not working in Firefox/IE -

dart - Dart2JS extended td not working in Firefox/IE -

i'm trying build simple crud-table using polymer dart.

the application consists of:

-"crud-th" = tablerowelement extends th -"crud-tr" = tablerowelement extends tr -"crud-td" = tablecellelement extends td

i'm calling components way:

<tr is="crud-th" template></tr> <tr is="crud-tr" template></tr> <td is="crud-td" template></td>

in chrome/dartium works fine when trying utilize application in firefox/ie nil gets displayed. dart2js compiler gives me next output:

[info dart2js]: took 0:00:05.747000 compile division|web/index.html_bootstrap.dart. build completed successfully

when i'm not importing crud-td component commenting out

<link rel="import" href="crud-td.html">

the application works fine.

the solution me right stop using extended-td component , instead replace divs/spans.

is there solution solve problem or there future updates planed solve problem, can go on using extended-td component?

dart polymer dart-polymer dart-html dart2js