BUG: IDE0051 not working when file contains `nameof()`

[LukeOwlclaw]

Version Used: VS2019 16.10.3 C:\Program Files\dotnet\sdk\5.0.302\Sdks\Microsoft.NET.Sdk\targets..\analyzers\Microsoft.CodeAnalysis.CSharp.NetAnalyzers.dll

Steps to Reproduce:

1. Create a new project (e.g. .NET Core 5 Console app)
2. Add private int mTest = 5; to Program.cs

You'll see immediately: Message IDE0051 Private member 'Program.mTest' is unused

3. Add to Main(): Console.WriteLine(nameof(Class1));

Actual Behavior:

Message IDE0051 is gone!

Expected Behavior:

Message IDE0051 should stay independent of nameof being used in file.

Screenshots: (for visualizing I set IDE0051 to "error" and used extension "Solution Error Visualizer"):

Same problem applies to IDE0052

[LukeOwlclaw]

The same problem happens when using the range operator ... For example write:

Console.WriteLine("Hello World!"[0..]);

And the IDE0051 error will disappear.