Javascript popup does not work on IE11

Question

After migrating to windows 10 and IE11 my popup stopped working. I can not say what it is, I searched and found nothing. On machines with windows 7 and IE7,8 still working normally. Important input data need to be posted to the popup.

Follows code;

JAVASCRIPT

function target_popup(form) {   
    window.open("", "formpopup", "width=600, height=260, top=300, left=130"); //me parece que o problema está aqui.
    form.target = "formpopup";
}

HTML

<form id="form" action="local.php" method="POST" onsubmit="target_popup(this)">
   <input type="text" name="date" id="date" />
   <input type="text" name="nome" id="nome" />
   <input type="submit" value="SUBMETER" />
</form>

SOME TESTS

After entering the urls manually the popup opens;

//abre o site do google
window.open("http://www.google.com", "formpopup", "width=600, height=260, top=300, left=130");
//abre "http://local.php" inexistente
window.open("http://local.php", "formpopup", "width=600, height=260, top=300, left=130");
//abre "http://local.php" inexistente
window.open("//local.php", "formpopup", "width=600, height=260, top=300, left=130");

Already the urls below do not work;

window.open("http://server:porta/local/arquivo.php", "formpopup", "width=600, height=260, top=300, left=130");
window.open("local/arquivo.php", "formpopup", "width=600, height=260, top=300, left=130");
window.open("arquivo.php", "formpopup", "width=600, height=260, top=300, left=130");
window.open("\\arquivo.php", "formpopup", "width=600, height=260, top=300, left=130");

As a conclusion it seems that IE11 only accepts the address with http:// or // but does not accept subdirectories and the address must have one . someone, tests outside of that did not work