styleSheet.loadTagStyle for A href link with underscore in PDF

[wider2]

Sorry for style question, but library cannot provide right behavior

if I try to add rules about link with underscore, it will never be rendered in PDF as link with underscore.
it is look like text-decoration does not work

    final StyleSheet styleSheet = new StyleSheet();
    styleSheet.loadTagStyle("a", "color", "blue");
    **styleSheet.loadTagStyle("a", "text-decoration", "underline");**
    final Map<String, Object> interfaceProps = new HashMap<>();
    try {
        final List<Element> pdfElements = HTMLWorker.parseToList(reader, styleSheet, interfaceProps);
        for (final Element elem : pdfElements) {
            textCell.addElement(elem);
        }
    } catch (IOException e) {

[wider2]

The only 1 solution i have found is
styleSheet.loadTagStyle("a", "style", "text-decoration:underline;");

[natl-set]

Sounds like it works as expected. text-decoration is only applicable with style attribute.