Pretty Printer not adding FORM... MODULE... headers

I'm not sure what's causing this and it appears to be an issue across all our developers, but when we click "Pretty Printer" button in editor, all the code gets aligned as normal however the new FORMs and MODULEs added don't get the comment header blocks.

Note, yes I'm sure the forms and modules aren't preceded by a comment line :).

Thanks for your help!