Webwork components rendered with the onofflist.vm template use an id of "radio_on" and "radio_off" for the on/off radio button options. These radio buttons are rendered with HTML labels associated with them via the "for" attribute.

If more than one such component is rendered in a page, the non-uniqueness of the radio button ids causes clicks on labels to be passed to the first component of the page and not the one that the label is visually adjacent to.