This is a know issue. This has not been duplicated by the sw developers, so I doubt it will ever be fixed or if it is it will be the result of fixing something else.
This does not seem to be movie releated as some folks have this issue on one machine an not another. I would have never found it had Planet of the Apes had longer credits.
184.108.40.206 does not have this problem but you will be limited to single pass.