CoreTextServicesManager.InputLanguage returns wrong language

[DJm00n]

I have found that Windows.UI.Text.Core.CoreTextServicesManager.InputLanguage.LanguageTag may return wrong input language that is not the same as returned from Windows.Globalization.Language.CurrentInputMethodLanguageTag. It is wrong in case of some transient input languages (that doesn't have LCID).

It seems there is same issue as I have already reported with LCIDToLocaleName API. LCIDToLocaleName returns same wrong language tags when I tried to convert transient LCID to a language tag.

It could be easily reproduced like this:

 Windows::UI::Text::Core::CoreTextServicesManager::GetForCurrentView()->InputLanguageChanged +=
        ref new TypedEventHandler<Windows::UI::Text::Core::CoreTextServicesManager ^, Platform::Object ^>(this, &SDL_WinRTApp::OnLanguageChanged);

....

void SDL_WinRTApp::OnLanguageChanged(Windows::UI::Text::Core::CoreTextServicesManager ^ sender, Platform::Object ^ args)
{
    Windows::Globalization::Language ^ language = sender->InputLanguage; // may return wrong value
    Windows::Globalization::Language ^ language2 = ref new Windows::Globalization::Language(Windows::Globalization::Language::CurrentInputMethodLanguageTag); // always works as intended
}

What Get-WinUserLanguageList PowerShell cmdlet returns:

Also reported here: dotnet/runtime#82367

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Document Details

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• ID: 9f24da47-f47b-8a3e-c62d-0d7c691a42ef
• Version Independent ID: 5d24c8fa-3529-2647-b35b-27a809a9fa15
• Content: CoreTextServicesManager.InputLanguage Property (Windows.UI.Text.Core) - Windows UWP applications
• Content Source: winrt-api-build/xml/Windows.UI.Text.Core/CoreTextServicesManager.xml
• Product: uwp
• Technology: winrt-reference
• GitHub Login: @Karl-Bridge-Microsoft
• Microsoft Alias: kbridge

[DJm00n]

@Karl-Bridge-Microsoft can you please take a look?

[DJm00n]

Hey @Karl-Bridge-Microsoft! Do you have any updates on this topic?

[DJm00n]

@Karl-Bridge-Microsoft any updates?

[DJm00n]

@Karl-Bridge-Microsoft any news?