TreeTable: @node-select and @node-expand don't work together

[fariss]

Describe the bug

Using TreeTable, I am implementing a feature where a node toggle event will expand the parent node, as well as the first child node and keeps the other children nodes collapsed.

This works fine when using @nodeSelect, but @nodeExpand does not behave as expected, even though they are assigned to the same event handler:

@nodeSelect="onNodeSelect"
@nodeExpand="onNodeSelect"

In this case @nodeSelect is able to change the expandedKeys to toggle the node and its first child, but @nodeExpand doesn't work (i.e. when the user clicks the > toggle icon). It seems they cannot both operate on the same expandedKeys

I think this is a bug in PrimeVue, and the following is an example which uses Toast to print out the expandedKeys.

As you can see here, the onNodeSelect is triggered when the toggle button (>) but the first child is not expanded.

Reproducer

https://stackblitz.com/edit/gdab7p

PrimeVue version

4.0.0

Vue version

3.x

Language

ALL

Build / Runtime

Vite

Browser(s)

Mozilla Firefox (latest)

Steps to reproduce the behavior

1. Click on a node: results in parent node and its first child being expanded (e.g. {'3': true, '3-0', true'})
2. Click the toggle node (i.e. the button >): results in parent node being expanded, but first child node is not expanded.

Expected behavior

Both @nodeExpand and @nodeSelect should behave the same, but only @nodeSelect does.