simple bug on form module
if you do 2 or more "checkbox" or "radio" with the same choices, the labels will not work properly and you will choose only in the first choices
ex:
choices one: 
[] choice1
[] choice2
[] choice3
choices two:
[] choice1
[] choice2
[] choice3
when you click on the choices of "choices two" it'l select the firsts one (because of the labels names and for)
i got a version 2.8.1 wb mod to work, maybe the last version could have this mini mod too in the same way
in the fonction make_checkbox in view.php
function make_checkbox(&$n, $idx, $params) {
	$field_id = $params[0][0];
	$seperator = $params[0][1];
	$label_id = 'wb_'.str_replace(" ", "_", $n);
	if(in_array($n, $params[1])) {
		$n = '<input class="field_checkbox" type="checkbox" id="'.$label_id.'" name="field'.$field_id.'['.$idx.']" value="'.$n.'" checked="checked" />'.'<label for="'.$label_id.'" class="checkbox_label">'.$n.'</lable>'.$seperator;
	} else {
		$n = '<input class="field_checkbox" type="checkbox" id="'.$label_id.'" name="field'.$field_id.'['.$idx.']" value="'.$n.'" />'.'<label for="'.$label_id.'" class="checkbox_label">'.$n.'</label>'.$seperator;
	}	
}
i've changed
$label_id = 'wb_'.str_replace(" ", "_", $n);
to
$label_id = 'wb_'.$field_id.'_'.str_replace(" ", "_", $n);
and i think that for 2.8.2 the line is 
$label_id = 'wb_'.preg_replace('/[^a-z0-1]/i', '_', $n);
and should be change as 
$label_id = 'wb_''.$field_id.'_'.preg_replace('/[^a-z0-1]/i', '_', $n);
and make_radio have the same problem.