QNetworkCookie parses expires attribute incorrectly

Header looking like this: Set-Cookie: name=value; path=/; expires=
being parsed different from any other browser, and sets expiration date in the past, instead of treating this cookie as 'session cookie', like other browsers do.
Looks like QNetworkCookiePrivate::parseSetCookieHeaderLine() gets empty(default?) QDateTime from parseDateString() .