incorrect alignment when sending a FormData file

[lmachens]

How can we reproduce the crash?

It crashes for me in this function:

export async function vectorize(
  filePath: string,
  outputPath: string,
  width: number,
  height: number,
) {
  console.log("Vectorizing", filePath);
  const formData = new FormData();
  const file = Bun.file(filePath);
  formData.append("image", file);
  formData.append("output.size.width", width.toString());
  formData.append("output.size.height", height.toString());
  formData.append("output.size.unit", "px");

  const response = await fetch(
    "https://vectorizer.ai/api/v1/vectorize?mode=test",
    {
      method: "POST",
      headers: {
        Authorization: "Basic XXX",
      },
      body: formData,
    },
  );

  if (!response.ok) {
    console.error("Error:", response.status, await response.text());
    return;
  }

  const blob = await response.blob();
  return Bun.write(outputPath, blob);
}

When I remove formData.append("image", file);, it doesn't throw this error.
I am running the same function on WSL too, which works well.

Relevant log output

============================================================
Bun v1.1.28 (cf4e9cb6) Windows x64
Windows v.win10_fe
CPU: sse42 avx avx2
Args: "C:\Users\DevLeon\.bun\bin\bun.exe" "run" "stormgate.ts" "--tiles"
Features: jsc fetch tsconfig 
Builtins: "bun:main" "node:buffer" "node:fs" "node:module" "node:os" "node:path" "node:stream" "node:string_decoder" "node:url" "node:util" "node:util/types" "node:zlib" 
Elapsed: 1206ms | User: 250ms | Sys: 31ms
RSS: 0.43GB | Peak: 0.43GB | Commit: 0.60GB | Faults: 123406

panic(main thread): incorrect alignment
oh no: Bun has crashed. This indicates a bug in Bun, not your code.

To send a redacted crash report to Bun's team,
please file a GitHub issue using the link below:

Stack Trace (bun.report)

Bun v1.1.27 (267afa2) on windows x86_64 [RunCommand]

panic: incorrect alignment

• ArenaAllocator.zig:170: createNode
• ArenaAllocator.zig:206: alloc
• Allocator.zig:240: allocBytesWithAlignment
• StringJoiner.zig:53: pushStatic
• DOMFormData.cpp:74: DOMFormData__forEach
• blob.zig:581: fromDOMFormData
• response.zig:2593: Bun__fetch
• 2 unknown/js code
• llint_entry