2.6 Internal Change: Scoped Slot Function Return Value
This change only affects render function users. If you only use templates, you can ignore this change.
The Problem
In render functions, scoped slots are exposed on this.$scopedSlots as functions. Up until now, calling a scoped slot function can return a single VNode or an Array of VNodes based on what the parent component is passing in. For example, given this component:
const Child = {