TreeView nodes don't expand

[Felicity-R]

Steps to repro:

1. Create an app with a TreeView that has some nodes with children.
   I just created a new app from the 'Uranium UI MAUI Blank Template'; added <material:TreeView ItemsSource="{Binding Nodes}"/> to the main page; and defined the nodes by copying the 'MyItems' class and Nodes initialization code from the examples in the docs: https://enisn-projects.io/docs/en/uranium/latest/themes/material/components/TreeView
2. Run the app
3. Click on one of the nodes to expand it

Expected Results:
You can expand the node and see the children.

Actual Results:
I can see a hover state over the chevron for a given node, but when I click it doesn't expand. No error is thrown either it just does nothing.

My sample app to repro: https://github.com/Felicity-R/UraniumTreeViewTest

Tested on Windows 10, 19043.2251

[LycianSeattle]

I hit this problem as well on Windows 11. Using a local build of UraniumUI instead of the nuget packages fixed the issue for me. My guess is that it was fixed by #109

[toxsedyshev]

@LycianSeattle PR #109 was merged into 2.1 but the bug is still reproduced in 2.1.0 NuGet package.

[LycianSeattle]

🤷 idk when the fix happened then. I do know locally referencing the projects instead of NuGet packages worked for me. That was the biggest churn I saw.

[enisn]

It might be related to IsExpandedPropertyName bindable property.

If the node binding context (nodes in viewmodel) doesn't have a property named IsExpanded, expand state couldn't be kept.

I'll investigate it

[enisn]

@LycianSeattle PR #109 was merged into 2.1 but the bug is still reproduced in 2.1.0 NuGet package.

You're right, ButtonView has issues on windows in release mode.

[enisn]

Can you try the new HotFix version 2.1.1? The problem should be solved

[toxsedyshev]

@enisn yep 2.1.1 fixed expand handling, but there is a new bug now: nodes with no children show expand button, while shouldn't.

UPD: Ah, sorry, it was me trying to fix Warning: 'IsLeaf' property not found on 'APIClient.MAUI.App.JsonTreeView.JsonTreeView+JsonTreeViewItem', target property: 'UraniumUI.Material.Controls.TreeViewNodeHolderView.IsLeaf' by adding IsLeaf = false

[Felicity-R]

Can confirm 2.1.1 fixed the issue for me too. Thanks for the quick turnaround!