I have found two limitations to the current treeview.async when loading multi-level async branches. Working update is attached.

Issues:

1. If an async branch is loaded with {expanded: false}, the closed class is not applied, resulting in an empty branch being left open.

I have update:

if (this.expanded) {

current.addClass("open");

}

to

if (this.expanded) {

current.addClass("open");

} else {

current.addClass("closed");

}

2. If a async loaded branch has async itself, with hasChildren, the placeholder item remains visible and the secondary branch is not loaded until the item is toggled.

I have update the placeholder generating code to:

if (!this.expanded) {

current.addClass("hasChildren");

createNode.call({

text:"placeholder",

id:"placeholder",

children:[]

}, branch);

} else {

load(settings, this.id, branch, container);

}