Hello,

In the settings of the Slider, you have selected “Distortion” Slide change animation – https://prnt.sc/gXWH9scciPBE, this animation does not accept values ​​for background – https://prnt.sc/KyB3lEYvj8_9, it always worked that way.

So to make it work as you want, you need to change the Slide change animation, e.g. set the “Fade” and then recheck the issue

Kind Regards