Treeview - broken expand child nodes

[pilarik31]

Hello,

it seems that treeview functionality has broken expand for child nodes.
This bug appears even on the demo project. I tried running the demo locally, but ended up with the same result as live demo.

I'll do some debugging, but since the project's internal code is new to me, I make no promises. Any clues would be appreciated!

Thanks.

[MartinKokesCz]

Hello, I have the same problem and I don't know how to solve it. I think it should be something missing in treeView.ts