When the root handles are shown, a tree with two sub levels does not collapse correctly.
In this example “Folder” is collapsed but “Leaf 2″ is still visible:
I just tried it in IE 11, Chrome 57, FireFox 53, Opera 43 and Safari 10, and they all look fine:
Could you tell me what browser are used to run the simulation?
That’s weird… now it works fine.
I use Chrome Version 57.0.2987.133 (64-bit) on a Windows 7 PC.