1. Currently there is no way to scroll to an item via an animation, i.e. animate the scroll offset so that a given item is brought into the viewport. We might consider this as an option for one of our next releases since it makes since to be able to animate to an item that is already realized.
2. As you have already guessed, animations are played only for items that are visible in the viewport. It is possible for us to update the behavior of the control to animate all items that are realized so that if you scroll to another item that is not visible in the viewport but it's realized - it is also animated. This will not work for items that are not realized however.
3. We will consider this suggestion and will extend the options provided by the EmptyContentDisplayMode
to support the mentioned case.
I hope this is helpful.
Let me know in case you have further questions or need assistance.
All the best,
the Telerik team
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