Quick fix of editorconfig based naming rule continues to report error after applying fix

[hackf5]

I'm using VS Code 1.52 on Windows with Omnisharp v1.23.7 (my visual studio version of MSBuild is 1.8.2.56705, dont know if this is relevant.

.editorconfig

# C# files
[*.cs]

#### Naming styles ####

##  Naming rules

# private fields (_foo)
dotnet_naming_rule.private_field_members_should_be_camel_case_begins_with_underscore.severity = warning
dotnet_naming_rule.private_field_members_should_be_camel_case_begins_with_underscore.symbols = private_field_members
dotnet_naming_rule.private_field_members_should_be_camel_case_begins_with_underscore.style = camel_case_begins_with_underscore

## Symbol specifications

# fields
dotnet_naming_symbols.private_field_members.applicable_kinds = field
dotnet_naming_symbols.private_field_members.applicable_accessibilities = private
dotnet_naming_symbols.private_field_members.required_modifiers =

# Naming styles

dotnet_naming_style.camel_case_begins_with_underscore.required_prefix = _
dotnet_naming_style.camel_case_begins_with_underscore.required_suffix =
dotnet_naming_style.camel_case_begins_with_underscore.word_separator =
dotnet_naming_style.camel_case_begins_with_underscore.capitalization = camel_case

# Diagnostics
dotnet_diagnostic.IDE1006.severity = warning

CSPROJ

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <TargetFramework>net5.0</TargetFramework>
    <EnforceCodeStyleInBuild>true</EnforceCodeStyleInBuild>
  </PropertyGroup>

</Project>

C# class

    public class Class1
    {
        private int foo;

        public int Foo => this.foo;
    }

The rule violation is correctly identified. When I select Fix Name Violation: _foo the class is correctly modified.

    public class Class1
    {
        private int _foo;

        public int Foo => this._foo;
    }

However the warning does not go away, the message is

Naming rule violation: Prefix '_' does not match expected prefix '_' [quickfixbugs, quickfixbugs]csharp(IDE1006)

(restarting Omnisharp makes the warning go away)

If I select this the the class becomes

    public class Class1
    {
        private int _oo;

        public int Foo => this._oo;
    }

It is now happy, but this is wrong.

[filipw]

would you be able to provide a project that reproduces this error?
1.23.7 is the version of the C# extension for VS Code, OmniSharp is actually at version 1.37.5.

Anyway, there is 1.23.8 out now, which contains the latest OmniSharp (1.37.5) which had a lot of editorconfig fixes. Does the problem reproduce there too?