It should look like http://jqueryui.com/demos/button/#radio .
Using monobook theme it looks fine. In vector, however it looks like singe buttons.
To test it, you can insert the following html:
<div class="demo">
<form>
<div id="radio">
<input type="radio" id="radio1" name="radio" /><label for="radio1">Choice 1</label> <input type="radio" id="radio2" name="radio" checked="checked" /><label for="radio2">Choice 2</label> <input type="radio" id="radio3" name="radio" /><label for="radio3">Choice 3</label>
</div>
</form>
</div><!-- End demo -->
And the followng JS:
mw.loader.using([
'jquery.ui.button'
], function(){ $( "#radio" ).buttonset(); });
Version: unspecified
Severity: minor
