I'm trying to use the follow code:
{{ bison:item_options product="{url}" select="no" }}
<label for="{{ sku }}">
<input id="{{ sku }}" type="radio" name="options" value="{{ sku }}" {{ if first }}checked{{ endif }}>
(etc)
</label>
{{ /bison:item_options }}
However, instead of the first, it checks the last one by default. If I change it to “if last”, then the same: it remains checking the last option by default.
Is this a bug or I'm doing something wrong?