When the Slider's increase and decrease buttons are focused, there's no key to change the Slider's value.
Workaround: https://dojo.telerik.com/UXoCoBuX/8
The Slider's value cannot be changed through the keyboard when the buttons are focused
You should be able to change the value through the keyboard
In some cases, when large numbers are set as smallStep and/or largeStep the tick label is not visible
The label of the third tick for the first and second Slider are not visible.
All tick labels in Slider should be rendered