PowerBuilder MSXML2.DOMDocument.4.0 encoding issue

I have a very simple PowerBuilder code:

    OLEObject lole_DOM    lole_DOM = CREATE OLEObject    lole_DOM.ConnectToNewObject("MSXML2.DOMDocument.4.0")    lole_DOM.LoadXML('<?xml version="1.0" encoding="UTF-8"?><root/>')    MessageBox("", String(lole_DOM.XML))    DESTROY lole_DOM

And the result I get:

    <?xml version="1.0"?>    <root/>

Where did encoding attribute go? Not sure who to blame, PowerBuilder or MSXML2.DOMDocument.4.0, any ideas?

Using PowerBuilder version 11.5.1 Build 5097