Saved PDF is generated with page size 7.67 x 10.17 inches
Can't see any place to adjust this. Never asked for it. Don't want it.
Might not have noticed except then I combined the PP PDF with other PDF's to produce a master doc for printing. As you scroll through the combined doc the page size change is quite jarring. What the...?
While describing this issue to someone else, I think I may have figured it out. I suspect the size was chosen to be appropriate (i.e. to leave a margin) for printing full-page slides. There was probably no effort made to customize this for different forms of output, e.g. handouts. As a general observation, I have always wished I had more complete control over the formatting of handouts printed or saved as PDF's. Page size would be a nice place to begin.