Use case

Using overflowing widgets or shadow inside AnimatedCrossfade is not possible currently. I can't see any reason for clipping being default behavior, we can clip the children we pass if that's desired. If this widget will keep having ClipRect wrapped around it should at least be configurable.

Proposal

If we add a property for configuring ClipRect in AnimatedCrossfade this behavior can be easily enabled. Current widget clips everything with hardEdge with no way of changing the behavior without replacing/rewriting whole widget.