btw before I got wine workarounds upstreamed into dnspy I had this in the wrapper script

    if [ ! -d "$WINEPREFIX" ]; then
      mkdir -p "$WINEPREFIX"
      ${lib.getExe' wine "wineboot"} -u
    fi

    if ! grep -qw "corefonts" "$WINEPREFIX/winetricks.log" 2>/dev/null; then
      ${lib.getExe' winetricks "winetricks"} corefonts
    fi

    # Disable hardware acceleration in WPF (Avalon) because it's causing visual glitches
    if ! grep -q '"DisableHWAcceleration"=dword:00000001' "$WINEPREFIX/user.reg" 2>/dev/null; then
      "$WINE" reg add "HKEY_CURRENT_USER\SOFTWARE\Microsoft\Avalon.Graphics" /v DisableHWAcceleration /t REG_DWORD /d 1 /f
    fi

but the built in profiler wasnt giving me anything at all

Initially I thought it was an issue with the new extension version, but I downgraded and the issue remains.
No source generators work with the following error:

Generator 'RegexGenerator' failed to initialize. It will not contribute to the output and compilation errors may occur as a result. Exception was of type 'FileNotFoundException' with message 'Could not load file or assembly 'System.Collections.Immutable, Version=9.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'. The system cannot find the file specified.
'.
System.IO.FileNotFoundException: Could not load file or assembly 'System.Collections.Immutable, Version=9.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'. The system cannot find the file specified.

File name: 'System.Collections.Immutable, Version=9.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'
   at System.Text.RegularExpressions.Generator.RegexGenerator.Initialize(IncrementalGeneratorInitializationContext context)
   at Microsoft.CodeAnalysis.GeneratorDriver.RunGeneratorsCore(Compilation compilation, DiagnosticBag diagnosticsBag, Func`2 generatorFilter, CancellationToken cancellationToken) in /_/src/Compilers/Core/Portable/SourceGeneration/GeneratorDriver.cs:line 252
-----

dotnet new console

then add this to Program.cs:

static partial class Regexes
{
    [GeneratedRegex(@"[\x00-\x1f\\/:\""*?<>\|]|\.+$")]
    public static partial Regex NotAllowedInFolderChars { get; }
}

dotnet new console (using .NET 9 + .NET 8 combined SDK)

then add this to Program.cs:

static partial class Regexes
{
    [GeneratedRegex(@"[\x00-\x1f\\/:\""*?<>\|]|\.+$")]
    public static partial Regex NotAllowedInFolderChars { get; }
}