Using ace:dyanmicResource id="......" type="button", the renderer does not write the id to the html markup.
The container is rendered with the id, but the id of the element is only written when the type is not "button"
....
from DynamicResourceRenderer code....
{code}
...
       if ("button".equals(dynamicResource.getType())) {
                writer.startElement(HTML.INPUT_ELEM, null);
                if (disabled) {
                    writer.writeAttribute(HTML.DISABLED_ATTR, HTML.DISABLED_ATTR, null);
                }
                writer.writeAttribute(HTML.TYPE_ATTR, "button", null);
                writer.writeAttribute(HTML.VALUE_ATTR, label, null);
                writer.writeAttribute(HTML.ONCLICK_ATTR, "window.open('" + resource.getRequestPath() + "');", null);
                writeStyleAttributes(dynamicResource, writer);
                writer.endElement(HTML.INPUT_ELEM);
            } else {
                if (disabled) {
                    writer.startElement(HTML.SPAN_ELEM, null);
                } else {
                    writer.startElement(HTML.ANCHOR_ELEM, null);
                    writer.writeAttribute(HTML.HREF_ATTR, resource.getRequestPath(), null);
                    String target = dynamicResource.getTarget();
                    if (target != null) {
                        writer.writeAttribute(HTML.TARGET_ATTR, target, null);
                    }
                }
                writer.writeAttribute(HTML.ID_ATTR, clientId, null);

                String image = dynamicResource.getImage();
.....
{code}