MudTreeView: Child nodes with `Visible=false` due to filtering are affected by parent selection in MultiSelection mode

Things to check

• I have searched the existing issues for this bug
• To rule out a caching problem I made sure the bug also happens in an incognito tab

Bug type

Component

Component name

MudTreeView

What happened?

When using MudTreeView in MultiSelection mode, child nodes that are filtered out by setting Visible=false are still influenced by the selection state of their parent node.

This behavior causes unexpected changes in the selected state of invisible child nodes when the parent node's selection changes. Ideally, nodes that are not visible due to filtering should not have their selection state affected by parent node interactions in MultiSelection mode.

Expected behavior

Child nodes with Visible=false should remain unaffected by the parent node's selection state in MultiSelection mode.

Reproduction link

https://try.mudblazor.com/snippet/mkwIFGvYkCXkFHRo

Reproduction steps

1. Create a MudTreeView with MultiSelection enabled.
2. Apply a filter that sets some child nodes' Visible=false.
3. Change the selection state of the parent node.

Relevant log output

No response

Version (bug)

7.15.0

Version (working)

No response

What browsers are you seeing the problem on?

Chrome

On which operating systems are you experiencing the issue?

Windows

Pull Request

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Code of Conduct

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