That's not an issue with O365 as such, though - that's obviously an issue Microsoft Office itself. They're not really the same thing beyond now being able to license them over the internet.

You'd have probably had the same thing if you'd installed PowerPoint 2014 from media.

You could have used the streamed version which doesn't install anything, though.

365 was the only option I could find on their web site after spending almost 2 hours trying to figure something out (was really hoping to add PPT Office 2010, but that was not an option).