[BUG] Virtualization is broken for ListBox

[rampaa]

Describe the bug

Virtualization is broken for ListBox but it is working as expected for ListView.

Steps to reproduce the bug

See the demo project I've created to demonstrate the issue: https://github.com/rampaa/HandyControlListBoxVirtualizationBug

Notice how when you click on the "Show ListView", you will almost instantly see the result; but when you click on the "Show ListBox", it will take a few seconds before the result is shown. If you remove HandyControl from the project then the "Show ListBox" button will also show the result almost instantly.

Expected behavior

ListBox virtualization should work

Screenshots

No response

NuGet package version

HandyControl 3.4.0

IDE

Visual Studio 2022-preview

Framework type

.Net 6.0

Windows version

May 2021 Update (19043)

Additional context

No response