?Editdocument not working in IE/Domino 8.5.1

In a database, I have a form with an edit button (@command[EditDocument]) that translates to ?Editdocument when used on web.

This button worked as designed when the database resided on a Domino 8.0.2 server, but now when it is moved to a 8.5.1 server, the button doesn´t work in IE 8 (not in Compatibility mode either). Firefox works as expected.

When the button is clicked in IE 8, all that happens is that the document closes.

Any ideas on this one?

Thanks and regards,

Erik