This issue appears on a full updated theme with no apparent conflicts or issues
The most common cause of this issue is more than one slider being called on the homepage, or a second slider widget accidentally placed in the footer or sidebar.
The duplicate widget causes a script conflict when both load with auto-slide enabled.
- Go to → and verify only one instance of the Slider widget exists in any panel
- If you have a widgetized page template, temporarily remove any slider widgets from the widgetized page slider panel