# pdftitle and such ignored if specified after \maketitle with report and book classes, not with article class

The following MWE shows that, with report (and book) class, PDF information entries such as pdftitle specified thanks to \hypersetup are ignored if they are inserted after \maketitle (and not ignored if inserted before \maketitle).

\documentclass{report}
\usepackage{hyperref}
\begin{document}
\title{A Title}
\author{An Author}
\maketitle
\hypersetup{%
pdftitle=A PDF Ttitle,
pdfauthor=A PDF Author,
pdfsubject=A PDF Subject,
pdfcreator=A PDF Creator,
pdfproducer=A PDF Producer,
pdfkeywords=A PDF Keyword%
}%
\end{document}

It wouldn't be that surprising if it would be the case with all standard classes but, with article class, such PDF information entries are not ignored, no matter they are inserted before or after \maketitle.

Is there a way to make such entries not ignored with report and book class, even if inserted after \maketitle?

-
@ChristianH.: There is no cause, because there is no bug. –  Heiko Oberdiek Mar 21 at 15:48