Thanks for posting! This is a known issue with the Slider component when trying to make it dynamic. Unfortunately, the Slider isn’t fully dynamic natively yet, meaning it doesn’t play very well with the CMS at this time.
We hope to make it easier in the future to create a dynamic slider, but until a component is built out or updated for this, you may need to find an alternative route. I recommend building a custom dynamic slider - here’s a great example: