Revert "Fixed CollectionView SelectedItem binding issue on initial loading"

[rmarinho]

Reverts #25555

Fixes #26187

[mattleibow]

We have to also open the original issues again?

[mattleibow]

@SuthiYuvaraj are you able to have a look at the initial PR and see why the selection state was not reset?

[SuthiYuvaraj]

@SuthiYuvaraj are you able to have a look at the initial PR and see why the selection state was not reset?

Hi @mattleibow ,
Sample Inaccessibility:
The sample provided in the issue report was inaccessible. Therefore, testing was conducted using a newly created sample where the selection mode was set to "Single," and navigation was handled within the Tapped event of the template. The selection functionality performed as expected, both with and without the applied fix, and the selected state was not retained in the view after navigation.

Additionally, testing was carried out using the SelectionChanged event. In this case, the selection was not reset during navigation. However, this behavior was observed regardless of whether the fix was applied.

To better understand the issue, Kindly modify the attached code or any additional information about the replication procedure or inputs regarding the sample would be highly beneficial in identifying the root cause and resolving the issue with selection state.

Reason for Regression:
Could you please clarify why this PR is considered a regression? Since no changes were made to update or reset the selection, further details would help address the concern effectively.

Regarding Windows Fix:
The reported issue does not occur on Windows platforms. Since the Windows-specific fix has been reverted in this PR, could you please remove the code changes related to the Windows platform? This will help maintain clarity and ensure only relevant updates are included.

[rmarinho]

Hello @SuthiYuvaraj we have an example here https://github.com/dotnet/maui/tree/fix-26187 the problem is when going back we still see the SelectedItem even after setting to null after pushing a new page., I understand we aren-t changing he selection, but this change is changing the behaviour in some way .

[rmarinho]

@SuthiYuvaraj I think I have a fix here #26315 can you review please ?

[SuthiYuvaraj]

@SuthiYuvaraj I think I have a fix here #26315 can you review please ?

@mattleibow This PR #26315 addresses the deselection issue effectively, so reverting the changes is unnecessary. Kindly proceed with closing it.