Sizing issue

I have a sizing issue which i can't work out. When i want the size to be the one demonstrated in picture 1. When i preview the slide on it's own it appears like this. When i preview as a project, it appears as picture 2.

A few things to note. I've not altered the story size. I have also imported a couple of scenes from other projects into the project which story size was the same. I've checked the story size on all scenes and they are all identical.

Has anyone got any idea why this is doing this?

2 Replies