How don't collapse children node when collapse parent node of them?

[ghost]

Thanks for your library. I have a trouble that I hope you will give me idea to refactor the library.

When we click to the node to collapse it, its nodes were collapsed. But child nodes that is parent, were collapsed too. So when we show all child of parent node, this child nodes were still collapsed. How can I fix this ? Thanks for your support and sorry because I write english so bad.

Org Chart when no collapse :

Org Chart when collapse :

Org Chart when click to show :

how to make it like the Org Chart when no collapse ?