CarouselView Renders Duplicate Data Templates Multiple Times

Description

When running the Maui Samples, the CarouselView renders Monkey instances multiple times. In MonkeysViewModel.CreateMoneyCollection the code is loading 17 Monkey objects into Monkeys, an ObservableCollection of Monkey. However, the CarouselView is showing many more items than 17, duplicating the original 17 multiple times. Here’s the URL to the solution in the maui-samples repository:

https://github.com/dotnet/maui-samples/tree/main/6.0/UserInterface/Views/CarouselViewDemos

I ran into this problem with my code and verified that it reproduces with the maui-samples solution too.

Steps to Reproduce

1. Clone maui-samples
2. Run the carousel demo at https://github.com/dotnet/maui-samples/tree/main/6.0/UserInterface/Views/CarouselViewDemos
3. Select Horizontal Data Template
4. Observe the duplicated templates.

Link to public reproduction project repository

https://github.com/dotnet/maui-samples/tree/main/6.0/UserInterface/Views/CarouselViewDemos

Version with bug

7.0 (current)

Last version that worked well

Unknown/Other

Affected platforms

Windows

Affected platform versions

10.0.17763.0

Did you find any workaround?

No response

Relevant log output

No response

[bcaceiro]

I have the same problem.

[jinxinjuan]

Verified this issue with Visual Studio Enterprise 17.7.0 Preview 2.0. Can repro on Windows and android platform with sample project. CarouselViewDemos