That seems to have fixed the issue. It is strange because I do not remember having that problem when I first installed the theme. I will just look for another theme to use for the website in place of Sydney.
Here is one of the pages that include a malfunctioning slideshow:
Example-Page
If you need I can make the website live so you can view it but I would rather not as this bug would be incredibly frustrating for any real visitors and I want to avoid a bad first impression of the website.
Thank you bdbrown I have just done so.
Thanks voldemortensen, what you suggested worked!