xcsync sync -tfm net9.0-ios issues after adding Widget Extension to generated project

Reproduce the failure by syncing a generated .NET 9 iOS project after adding a Widget Extension. Start with XcodeObjectConverter.cs at line 18 and XcodeProjectObjectsJsonConverter.cs at line 30, then follow XcodeWorkspace.LoadProjectAsync at line 261. Done means xcsync can load and sync the generated project without the unknown PBXCopyFilesBuildPhase exception.

Hello,

Generating and syncing an Xcode project for our .NET9 MAUI application is functioning without any issues for a basic application. However, as soon as I add the Widget Extension to that project, I encounter the following error:

[13:37:35 INF xcsync (1)] Syncing files from project 'obj/Debug/net9.0-ios/iossimulator-x64/xcsync' to target 'MyApp.UI.csproj'
Unhandled exception: System.Text.Json.JsonException: Unknown isa value: PBXCopyFilesBuildPhase
   at xcsync.Projects.Xcode.XcodeObjectConverter.Read(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options) in /_/src/xcsync/Projects/Xcode/XcodeObjectConverter.cs:line 18
   at xcsync.Projects.Xcode.XcodeProjectObjectsJsonConverter.Read(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options) in /_/src/xcsync/Projects/Xcode/XcodeProjectObjectsJsonConverter.cs:line 30
   at System.Text.Json.Serialization.JsonConverter`1.TryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value, Boolean& isPopulatedValue)
   at System.Text.Json.Serialization.Metadata.JsonPropertyInfo`1.ReadJsonAndSetMember(Object obj, ReadStack& state, Utf8JsonReader& reader)
   at System.Text.Json.Serialization.Converters.ObjectDefaultConverter`1.OnTryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value)
   at System.Text.Json.Serialization.JsonConverter`1.TryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value, Boolean& isPopulatedValue)
   at System.Text.Json.Serialization.JsonConverter`1.ReadCore(Utf8JsonReader& reader, JsonSerializerOptions options, ReadStack& state)
   at System.Text.Json.Serialization.Metadata.JsonTypeInfo`1.ContinueDeserialize(ReadBufferState& bufferState, JsonReaderState& jsonReaderState, ReadStack& readStack)
   at System.Text.Json.Serialization.Metadata.JsonTypeInfo`1.DeserializeAsync(Stream utf8Json, CancellationToken cancellationToken)
   at xcsync.Projects.XcodeWorkspace.LoadProjectAsync(String path, CancellationToken cancellationToken) in /_/src/xcsync/Projects/XcodeWorkspace.cs:line 261
   at xcsync.Projects.XcodeWorkspace.LoadAsync(CancellationToken cancellationToken) in /_/src/xcsync/Projects/XcodeWorkspace.cs:line 63
   at xcsync.SyncContext.SyncFromXcodeAsync(CancellationToken token) in /_/src/xcsync/SyncContext.cs:line 484
   at xcsync.SyncContext.SyncAsync(CancellationToken token) in /_/src/xcsync/SyncContext.cs:line 33
   at xcsync.Commands.SyncCommand.Execute() in /_/src/xcsync/Commands/SyncCommand.cs:line 22
   at System.CommandLine.Invocation.AnonymousCommandHandler.InvokeAsync(InvocationContext context)
   at System.CommandLine.Invocation.InvocationPipeline.<>c__DisplayClass4_0.<<BuildInvocationChain>b__0>d.MoveNext()
--- End of stack trace from previous location ---
   at System.CommandLine.Builder.CommandLineBuilderExtensions.<>c__DisplayClass17_0.<<UseParseErrorReporting>b__0>d.MoveNext()
--- End of stack trace from previous location ---
   at System.CommandLine.Builder.CommandLineBuilderExtensions.<>c__DisplayClass12_0.<<UseHelp>b__0>d.MoveNext()
--- End of stack trace from previous location ---
   at System.CommandLine.Builder.CommandLineBuilderExtensions.<>c__DisplayClass22_0.<<UseVersionOption>b__0>d.MoveNext()
--- End of stack trace from previous location ---
   at System.CommandLine.Builder.CommandLineBuilderExtensions.<>c__DisplayClass19_0.<<UseTypoCorrections>b__0>d.MoveNext()
--- End of stack trace from previous location ---
   at System.CommandLine.Builder.CommandLineBuilderExtensions.<>c.<<UseSuggestDirective>b__18_0>d.MoveNext()
--- End of stack trace from previous location ---
   at System.CommandLine.Builder.CommandLineBuilderExtensions.<>c__DisplayClass16_0.<<UseParseDirective>b__0>d.MoveNext()
--- End of stack trace from previous location ---
   at System.CommandLine.Builder.CommandLineBuilderExtensions.<>c.<<RegisterWithDotnetSuggest>b__5_0>d.MoveNext()
--- End of stack trace from previous location ---
   at System.CommandLine.Builder.CommandLineBuilderExtensions.<>c__DisplayClass8_0.<<UseExceptionHandler>b__0>d.MoveNext()

Is this a known bug, or is it related to the fact that the Widget Extension is based on SwiftUI rather than Objective-C? Currently, I have a working .NET MAUI application with Live Activity support by creating a (separate) native Xcode project with the same BundleIdentifiers as the MAUI iOS app.