[BUG] UniformItemsLayoutManager throws ArgumentException upon removing all children

[Westhes]

Is there an existing issue for this?

• I have searched the existing issues

Did you read the "Reporting a bug" section on Contributing file?

• I have read the "Reporting a bug" section on Contributing file: https://github.com/CommunityToolkit/Maui/blob/main/CONTRIBUTING.md#reporting-a-bug

Current Behavior

UniformsItemsLayoutManager throws an ArgumentNullException when all its children are removed.

Expected Behavior

UniformsItemsLayoutManager doesn't throw an exception and goes back to the state it would be in when instantiating without children.

Steps To Reproduce

1. Build the provided repository for any platform
2. Click the button.

Link to public reproduction project repository

• https://github.com/RWesthes/UniformItemsLayoutBug

Environment

- .NET MAUI CommunityToolkit: 8.0.1
- OS: Winodws 10
- .NET MAUI: 8

Anything else?

The exception is thrown by the Math.Clamp method at UniformItemsLayoutManager.shared.cs#L91 due to visibleChildrenCount being lower than the minimum value.
Simply adding columnsCount != 0 && to the if statement resolves this exception.

[VladislavAntonyuk]

Most likely this is expected as you call Remove method with the Null parameter.

[Westhes]

@VladislavAntonyuk step 4 was just an quick and generic way of removing a single child from the collection.
Calling UniformItemsLayout_Default.Children.Clear(); on the collection also throws this exception.

[dotnet-policy-service]

This issue has been automatically marked as stale because it has been marked as requiring author feedback but has not had any activity for 3 days. It will be closed if no further activity occurs within 2 days of this comment. If it is closed, feel free to comment when you are able to provide the additional information and we will re-investigate.

[RWesthes]

Added reproduction project repository.

[dotnet-policy-service]

This issue has been automatically marked as stale because it has been marked as requiring author feedback but has not had any activity for 3 days. It will be closed if no further activity occurs within 2 days of this comment. If it is closed, feel free to comment when you are able to provide the additional information and we will re-investigate.

[Westhes]

bump.
Also, can you remove the needs reproduction tag?