Loading special library lead to empty tree for this assembly

[trivalik]

Steps to reproduce

1. load Telerik.Windows.Controls.dll of current years (I tested from 2023)
2. try to expand in Assemblies view
3. nothing expands

Error message shown

none

but with attached Debugger shows:

System.BadImageFormatException: "Invalid COR20 header signature." with Stacktrace:

 	System.Reflection.Metadata.dll!System.Reflection.Metadata.MetadataReader.ReadMetadataHeader(ref System.Reflection.Metadata.BlobReader memReader, out string versionString)	Unknown
 	System.Reflection.Metadata.dll!System.Reflection.Metadata.MetadataReader.MetadataReader(byte* metadata, int length, System.Reflection.Metadata.MetadataReaderOptions options, System.Reflection.Metadata.MetadataStringDecoder utf8Decoder, object memoryOwner)	Unknown
 	System.Reflection.Metadata.dll!System.Reflection.Metadata.MetadataReaderProvider.GetMetadataReader(System.Reflection.Metadata.MetadataReaderOptions options, System.Reflection.Metadata.MetadataStringDecoder utf8Decoder)	Unknown
	ICSharpCode.Decompiler.dll!ICSharpCode.Decompiler.Metadata.MetadataFile.MetadataFile(ICSharpCode.Decompiler.Metadata.MetadataFile.MetadataFileKind kind, string fileName, System.Reflection.Metadata.MetadataReaderProvider metadata, System.Reflection.Metadata.MetadataReaderOptions metadataOptions, int metadataOffset, bool isEmbedded) Line 234	C#
 	ICSharpCode.ILSpyX.dll!ICSharpCode.ILSpyX.FileLoaders.MetadataFileLoader.Load(string fileName, System.IO.Stream stream, ICSharpCode.ILSpyX.FileLoaders.FileLoadContext settings) Line 39	C#
 	ICSharpCode.ILSpyX.dll!ICSharpCode.ILSpyX.LoadedAssembly.LoadAsync(System.Threading.Tasks.Task<System.IO.Stream> streamTask) Line 339	C#
 	ICSharpCode.ILSpyX.dll!ICSharpCode.ILSpyX.LoadedAssembly..ctor.AnonymousMethod__0() Line 90	C#

Details

• in Version 7.2.0.6702-preview2 it works
• Version 8.2.0.7535 is last released version where it works
• ILSpy shows in front of assmebly name a bluish icon
• the text of the exception comes from System.Reflection.Metadata.dll, I replaced with newest, but still failing
• source of exception is probably https://github.com/dotnet/runtime/blob/dde00d376e4b40674488c5c688899d7a343f4eca/src/libraries/System.Reflection.Metadata/src/System/Reflection/Metadata/MetadataReader.cs#L186

[trivalik]

Bisect showed that issue starts with commit 65e30c0 Add IFileLoader API.