Shell.BackButtonBehavior does not work when using extended Tabbar (tabbar with more than 5 tabs)on IOS.

[SorenBech2]

Description

Using
<Shell.BackButtonBehavior >

</Shell.BackButtonBehavior>

does not work when page is accessed through extended tabbar (tabber with more than 5 tabs) on IOS. Android works fine.

Steps to Reproduce

Clone attached repository and compile to Android. Press more and "Select for BackButton Override Test" On next page press Back arrow. Observe that override works in Debug output window.

Compile to IOS and repeat. Override method is never executed.
Press the tab "BackButtonTest" on the normal tabbar. Go to second page, press Back arrow and observe Debug output. It works fine, so issue is only when page is accessd through extended tabbar.

Link to public reproduction project repository

https://github.com/SorenBech2/ShellTestMAUI9

Version with bug

9.0.40 SR4

Is this a regression from previous behavior?

Not sure, did not test other versions

Last version that worked well

No response

Affected platforms

iOS

Affected platform versions

18.3.1

Did you find any workaround?

No

Relevant log output

[similar-issues-ai]

We've found some similar issues:

• OnAppearing and OnNavigatedTo does not work when using extended Tabbar (tabbar with more than 5 tabs) on IOS. #27799 , similarity score: 84%
• MAUI 9 Shell Tabbar overrides tabbar title with page title. #26165 , similarity score: 84%
• MAUI 9 Shell Tabbar does not work on iOS with more than 5 tabs #26164 , similarity score: 83%
• Tabbar icon color wrong on IOS (extended tabbar) #27781 , similarity score: 81%

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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