IsEnabled does not work in BackButtonBehavior

[acaliaro]

Description

If I use this code

<Shell.BackButtonBehavior>
<BackButtonBehavior
Command="{Binding NavBarBackButtonCommand}"
IsEnabled="{Binding IsBackButtonEnabled}"
IsVisible="{Binding HasBackButton}" />

</Shell.BackButtonBehavior>

and set IsBackButtonEnabled to false in the VM, the back button does not disable. IsVisible, on the other hand, works correctly

@kubaflo you have already worked to solve BackButtonBehavior problems; can you take a look to this, thanks!

Steps to Reproduce

Run the sample. press the button should open a new page where is present the back button

Link to public reproduction project repository

https://github.com/acaliaro/MauiIsEnabledDoesNotWorkInBackButtonBehavior

Version with bug

9.0.50 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

Affected platform versions

ios 18.2.1, android 13.0

Did you find any workaround?

no

Relevant log output

[jfversluis]

If you remove the Command or implement the Command.CanExecute, does that change things?

Looking at the implementation it looks at that to be enabled or not too

[acaliaro]

Hi @jfversluis

thanks for your interest. I tried to remove the command and also the binding, setting the property to false, but the back is always enabled and if I press it, it goes back to the previous page

<Shell.BackButtonBehavior>
    <BackButtonBehavior
        IsEnabled="False"
        IsVisible="{Binding HasBackButton}" />

</Shell.BackButtonBehavior>

ps. sorry for the spam....

[kubaflo]

Hi, @acaliaro you're certainly not spamming!

Thanks for letting us know about this issue. You seem to be right. This property is not working as expected.

[kubaflo]

I think this should help #28734

[kubaflo]

BTW it doesn't work on iOS only, right?

[acaliaro]

BTW it doesn't work on iOS only, right?

Also android

[HarishwaranVijayakumar]

This issue has been verified in Visual Studio Code 1.98.2 with MAUI version 9.0.50. It can be reproduced on iOS platform and Android platform.