uk-active class for all visible thumbs in Slider

[Sulpher]

UIkit Version

3.16.23 (Yootheme Pro 4.0.8)

Actual Behavior

All visible thumbs have uk-active class during scrolling.
We can see it at Uikit documentation page:
https://getuikit.com/docs/slider#usage

As the result, we can see all thumbs as active:

While it should be like here:

There should be one thumb with uk-active class

[alexander-nitsche]

My use case is related to this: I want to implement a slider behaviour which does not translate the items, as all 4 are always visible, but scales the active item and shrinks the others, as is done e.g. on the homepage of dfb-akademie.de: