configureLinkAttribute 点击后无效

[xygkevin]

lab.configureLinkAttribute = { type, attributes, isSelected in
var atts = attributes
switch type {
case privacyType, agreementType:
atts[NSAttributedString.Key.font] = isSelected ? kxFontMedium(12) : kxFont(12)
default:
break
}
return atts
}
isSelected == true时设置为粗体字， isSelected == false时设置为常规体，
但是点击之后就全部变成常规体了，粗体设置无效