[Bug Report][3.7.6] VTreeView: isOpen slot prop is always equals to false in prepend and append slots if return-object is specified

[b-maslennikov]

Environment

Vuetify Version: 3.7.6
Vue Version: 3.5.13
Browsers: Google Chrome, Mozilla Firefox, Microsoft Edge
OS: Windows

Steps to reproduce

• Add v-treeview with open-on-click prop
• Add prepend or append slot with isOpen prop

Expected Behavior

isOpen value should be changed when toggle (open/close) the node

Actual Behavior

isOpen value is always equals to false

Reproduction Link

https://play.vuetifyjs.com/#...

[b-maslennikov]

It works in this example utill I add return-object

[MatthewAry]

Hi there, I don't think this is the bug you think it is. I made a change to your reproduction. and by specifying what the item-value is, we're able to get the proper isOpen state from the component. However, I do think there is a bug with getting the isOpen state when using the return-object prop. Normally I would expect that you would have to define a custom value-comparator so the component would be able to properly distinguish different objects, but I wasn't able to get it to work. but perhaps I wasn't doing it correctly? Anyways. I will mark this as a bug because it seems broken to me when using return-object

[b-maslennikov]

hah. thanks. originally I had return-object in my code. so that's the problem I have.