Password Protection returning incorrect owner password when try to copy text

[noveweb]

Password protection to open the file still working, but when i try to copy some text from pdf file a password prompt open asking me by the owner password. When i type the owner password the prompt return that the owner password is incorrect:

Im using same password for user and owner. My code:

$pass = "123789";

if($pass){
$html2pdf->pdf->SetProtection(array('copy','print'), $pass, $pass, 0, null);
}

Thanks in advance!