Expected Behavior

Multipart form fields should not be affected when adding pre-request script that does not touch request body.

Actual Behavior

Multipart from-data does not include filename for a form field that includes file data.

• If the form-data field does NOT include a name, then the field is excluded in the final request.
• If the form-data field DOES include a name, then the field is included in the final request but it doesn't include the filename, nor any file data.
  • Note, the filename aspect is required for some APIs (like Ktor) to understand that the FormData field is actually a file, and not a normal form field.

Reproduction Steps

1. Create new POST request
2. Set Body to use multipart
3. Add new form-data field for the body that includes a file
4. Set new pre-request script
5. Update the request's auth according to standard documentation:

insomnia.request.auth.update(
  {
    type: 'bearer',
    bearer: [
      { key: 'token', value: 'XXX' },
      { key: 'prefix', value: 'Bearer' },
    ],
  },
  'bearer'
);

6. Send request
7. Note that the console outputs for the request structure

Is there an existing issue for this?

• I have searched the issue tracker for this problem.

Which sync method do you use?

• Git sync.
• Insomnia Cloud sync.
• Local only

Additional Information

The expected behavior should continue to work as it does as if there is no pre-request script on the request. The behavior does work fine without any script, and adding the auth update should not have any affect on the request body formdata inputs.

Insomnia Version

v10.2.0

What operating system are you using?

macOS

Operating System Version

Darwin arm64 23.6.0

Installation method

Homebrew

Last Known Working Insomnia version

No response