IDE0051 / IDE0052 / IDE0005 issues with 7.0.302 and dotnet format --verify-no-changes

With the recent upgrade to 7.0.302, `dotnet format --verify-no-changes` seems to now be reporting `IDE0051` and `IDE0052` errors incorrectly in my project.

I'm using Blazor with code behind files and several `private` members are declared in the code behind file (Foo.razor.cs) but only used in the markup file (Foo.razor).

`dotnet format --verify-no-changes` also seems to be reporting errors for `IDE0005` (using unnecessary) in a razor code behind file, but the using **is** necessary.