Shell.BackButtonBehavior interferes with Flyout icon

[Pantheas]

Description

Setting the Shell.BackButtonBehavior property and defining an ICommand interferes with the Flyout menu icon.
On Android, the icon is not shown at all while on iOS the icon is just not working.
The menu can still be shown using the swipe gesture.

Once navigation is done to a nested page and back, the icon is shown correctly but not working.

Steps to Reproduce

1. Create a new MAUI project
2. Add a ShellContent and eventually set FlyoutBehavior to Flyout.
3. Add Shell.BackButtonBehavior to the first ShellContent page that is shown on app start.
4. Set the Command property to an ICommand.
5. Start the app --> Flyout icon is not visible

Link to public reproduction project repository

No response

Version with bug

8.0.40 SR5

Is this a regression from previous behavior?

Not sure, did not test other versions

Last version that worked well

Unknown/Other

Affected platforms

iOS, Android, I was not able test on other platforms

Affected platform versions

No response

Did you find any workaround?

No response

Relevant log output

No response

[github-actions]

Hi I'm an AI powered bot that finds similar issues based off the issue title.

Please view the issues below to see if they solve your problem, and if the issue describes your problem please consider closing this one and thumbs upping the other issue to help us prioritize it. Thank you!

Open similar issues:

• Custom FlyoutIcon visible although FlyoutBehavior set to disabled on Android an IOS (#9037), similarity score: 0.83
• [iOS] MenuItem Command not executed with FlyoutHeader set (#19149), similarity score: 0.82
• [Android] Shell.FlyoutIcon doesn't show correctly. (#21466), similarity score: 0.81
• [Android] Shell BackButtonBehavior binding Command to valid ICommand causes back button to disappear (#7045), similarity score: 0.80
• MAUI Shell Flyout unwanted click through behavior (#21097), similarity score: 0.80

Note: You can give me feedback by thumbs upping or thumbs downing this comment.

[mattleibow]

I know you have steps here, but since this involves multiple pages and more than a few lines of code, a simple repro of what you are doing will really help.

But is this your issue maybe?

• [Android] Shell BackButtonBehavior binding Command to valid ICommand causes back button to disappear #7045

[Pantheas]

I know you have steps here, but since this involves multiple pages and more than a few lines of code, a simple repro of what you are doing will really help.

But is this your issue maybe?

• [Android] Shell BackButtonBehavior binding Command to valid ICommand causes back button to disappear #7045

Hi,
the issue seems to be quiet similar.
However I am using the Shell Flyout.
If Shell.BackButtonBehavior is set, the FlyoutIcon is not visible on Android. After navigation occurred, the icon is drawn but not.
On iOS, the icon is visible but not working.

Feel free to take a look at my sample project.