Build should not show the "Does not support publish of C++/CLI project targeting dotnet core" error message when IsPublishable is false

When building & publishing a whole solution which contains a C++/CLI project, the publish shows the following error message:
C:\Program Files\dotnet\sdk\3.1.301\Sdks\Microsoft.NET.Sdk\targets\Microsoft.NET.Publish.targets(1048,5): error NETSDK1117: Does not support publish of C++/CLI project targeting dotnet core. [C:\XXX\YYY.vcxproj]

If you set the IsPublishable property to false, the error is still shown.

In my opinion this should be checked only when the project will be published here:
https://github.com/dotnet/sdk/blob/d9186282b30574e1de24939aa32b615e19c084a7/src/Tasks/Microsoft.NET.Build.Tasks/targets/Microsoft.NET.Publish.targets#L63-L65

Author: zgabi

src/Tasks/Microsoft.NET.Build.Tasks/targets/Microsoft.NET.Publish.targets

@@ -1167,6 +1167,7 @@ Copyright (c) .NET Foundation. All rights reserved.
     ============================================================
     -->
   <Target Name="_CheckForLanguageAndPublishFeatureCombinationSupport"
+        Condition="$(IsPublishable) == 'true'"
         BeforeTargets="Publish;PrepareForPublish">
 
     <NETSdkError Condition="'$(Language)' == 'C++' and '$(TargetFrameworkIdentifier)' == '.NETCoreApp'"