[iOS] Navigation.PushModalAsync memory leak

[nastutusha]

On iOS MAUI app there is a memory leak when pushing a modal page, when this modal page is popped, the underlying navigation page loses all controls.

Steps to Reproduce

0. Create Maui app with two pages
1. Call PushModalAsync(second page)
2. Call PopModalAsync()
3. Run iOS simulator or on device

Actual Behaviour:

Page that called a modal page becomes completely blank after pop

Expected Behaviour:

Modal page pushed and popped without a memory leak

I have a sample project with Memory toolkit applied where you can see a page gets leaked after pushing modal page and becomes blank after popping it https://github.com/nastutusha/MauiModalMemoryLeak

Version with bug

I can reproduce it with .NET 8.0.402 and 9.0.100-rc.2.24474.11

Affected platforms

iOS

[similar-issues-ai[bot]]

We've found some similar issues:

• 21453 , similarity score: 85%

• 20094 , similarity score: 83%

If any of the above are duplicates, please consider closing this issue out and adding additional context in the original issue.

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[nastutusha]

I've seen the similar issues, but none of them neither address nor fix the condition I've described.

[MarcosSandoval]

Any news on this guys? Our team is stuck with this issue and it's even worse because there doesn't seem to be any workaround that helps.