runtime: Assembly.GetType("System.Net.Http.HttpClientHandler", false, true) does not find type but finds it when ignoreCase is set to false

Description

When trying to do GetType with ignorecase as true does not find the type but finds it when ignoreCase is set to false.

This only happens in .NET7 preview 1 and does not happen in .NET 6.

PowerShell team is using the type in PowerShellGet and it fails to register the endpoint as the type is not found.

Reproduction Steps

Sample program:

public static void Main(string[] args) {

        //string assemblyName = "System.Net.Http.dll";
        //string typeName = "System.Net.Http.HttpClientHandler";
        string assemblyName = args[0];
        string typeName = args[1];

        var myLocation = Path.GetDirectoryName(Assembly.GetEntryAssembly()?.Location);

        string assemblyPath = Path.Join(myLocation, assemblyName);
        var assembly = System.Reflection.Assembly.LoadFile(assemblyPath);

        var typeWithCaseIgnore = assembly.GetType(typeName, throwOnError: false, ignoreCase: true);
        if (typeWithCaseIgnore is null) {
            Console.WriteLine("Type NOT found with: assembly.GetType(typeName, throwOnError: false, ignoreCase: true)");
        }
        else {
            Console.WriteLine($"Type found with assembly.GetType(typeName, throwOnError: false, ignoreCase: true): {typeWithCaseIgnore.FullName} ");
        }

        var typeWithoutCaseIgnore = assembly.GetType(typeName, throwOnError: false, ignoreCase: false);
        if (typeWithoutCaseIgnore is null) {
            Console.WriteLine("Type NOT found with: assembly.GetType(typeName, throwOnError: false, ignoreCase: false)");
        }
        else {
            Console.WriteLine($"Type found with assembly.GetType(typeName, throwOnError: false, ignoreCase: false): {typeWithoutCaseIgnore.FullName} ");
        }
    }

Output:

HelloWorld.exe System.Net.Http.dll System.Net.Http.HttpClientHandler Type NOT found with: assembly.GetType(typeName, throwOnError: false, ignoreCase: true) Type found with assembly.GetType(typeName, throwOnError: false, ignoreCase: false): System.Net.Http.HttpClientHandler

But for some other type it works:

HelloWorld.exe System.Xml.dll System.Xml.XmlTextReader Type found with assembly.GetType(typeName, throwOnError: false, ignoreCase: true): System.Xml.XmlTextReader Type found with assembly.GetType(typeName, throwOnError: false, ignoreCase: false): System.Xml.XmlTextReader

Expected behavior

System.Net.Http.HttpClientHandler is found

Actual behavior

System.Net.Http.HttpClientHandler is NOT found

Regression?

Yes. Works with .NET 6 and below

Known Workarounds

Use ignoreCase as false, but might cause side effects

Configuration

.NET SDK (reflecting any global.json): Version: 7.0.100-preview.1.22107.7 Commit: fa575c5753

Runtime Environment: OS Name: Windows OS Version: 10.0.22000 OS Platform: Windows RID: win10-x64 Base Path: <>\AppData\Local\Microsoft\dotnet\sdk\7.0.100-preview.1.22107.7\

Host (useful for support): Version: 7.0.0-preview.1.22076.8 Commit: 405337939c

Other information

No response