Error while dynamic remove SplitterPanel component.

[d-kurchenko]

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https://codesandbox.io/s/beautiful-robinson-j3cr6?file=/src/App.vue

Current behavior

When I try to remove SplitterPanel in Splitter, i get error: "child.children.forEach is not a function"

Expected behavior

I want the number of SplitterPanels in Splitter to be dynamically changeable (remove / add)