$elementFunc = [ Html::class, $this->mOptionsLabelsNotFromMessage ? 'rawElement' : 'element' ];
$checkbox =
Xml::check( "{$this->mName}[]", $checked, $attribs ) .
- ' ' .
+ "\u{00A0}" .
call_user_func( $elementFunc,
'label',
[ 'for' => $attribs['id'] ],