StringFormat='{0:c}' doesn't show dollar sign in .NET MAUI 9

[imsam67]

Description

The following code does not display a dollar symbol. Instead, it display some other symbol -- see image below:

<Label
   Text={Binding Amount, StringFormat='{0:c}'}
   TextColor="Black" />

Here's what it shows instead:

This was working perfectly in .NET 8.

Steps to Reproduce

In a .NET MAUI app targeting .NET 9, just add a Label and bind it to a numeric value e.g. decimal and use `StringFormat='{0:c}' in the label to format it as currency.

Link to public reproduction project repository

https://github.com/iQuestLLC/maui-9-issues

No response

Version with bug

9.0.0 GA

Is this a regression from previous behavior?

Yes, this used to work in .NET MAUI

Last version that worked well

8.0.100 SR10

Affected platforms

iOS

Affected platform versions

No response

Did you find any workaround?

Not yet

Relevant log output

[Ying-6]

Hi @imsam67 I added the label code you provided to the MainPage.xaml file, but it does not display any value after being deployed to the iOS simulator. Could you provide us with a sample project so we can investigate it further? Looking forward to your reply!

[imsam67]

@Ying-6 Here's the repo with sample code. You'll see what I'm talking about on MainPage.xaml.

https://github.com/iQuestLLC/maui-9-issues

[Ying-6]

This issue has been verified using Visual Studio 17.13 Preview 1(9.0.10 & 9.0.00). Can repro this issue on iOS platforms. And 8.0.100 works fine.

[jfversluis]

I don't think this is on us: dotnet/runtime#108958

[tj-devel709]

I will close this issue for now as @jfversluis posted the root cause of this issue in the runtime repro. There is a listed workaround there for now as well. Please feel free to re-open this issue though or create a new one and link this one if needed!