C#, S1939, VS2022 17.4.4, SonarLint 6.12.0.59751, connected or not
using System;
namespace SomeNamespace
{
internal class SomeTest
{
}
internal interface ISomeInterface
{
public int test();
}
internal class S1939Test : SomeTest, ISomeInterface
{
// until you implement the method(s) from the interface, SL will show the S1939 warning for ISomeInterface although the SomeTest class does really not implement it.
}
}