Selected option is not shown on component build

[kaleksandar]

If you change, in the extractData method from this:
var o = {
selected: e.getAttribute("selected"),
disabled: e.disabled,
optgroup: "OPTGROUP" == e.tagName
};

to this:
var o = {
selected: null != e.getAttribute("selected"),
disabled: e.disabled,
optgroup: "OPTGROUP" == e.tagName
};

you fill not get this issue.