and so on ad infinitum. It does seem to present the correct text though.
Very disconcerting.
Is the issue that each preview seems to be the first slide? But you are saying in Preview it looks correct?
Yes in the past I have been able to open each screen in turn and annotate my printed copy to show the slide breaks. I remember clearly because only and unopened screen responds to being pushed up before clicking on the play arrow so it has always been a bit of an awkward operation.
I hadn't actually checked the Preview view but it does display correctly as it does if the presentation is taken online.