Cannot add or remove additionalProperties as of 6.0.0-beta.12

[mwmancuso]

Prerequisites

• I have searched the existing issues
• I understand that providing a SSCCE example is tremendously useful to the maintainers.
• I have read the documentation
• Ideally, I'm providing a sample JSFiddle, Codesandbox.io or preferably a shared playground link demonstrating the issue.

What theme are you using?

shadcn

Version

6.0.0-beta.12

Current Behavior

When using a form with additionalProperties like so:

function SomeComponent() {
  return (
    <Form
      schema={{
        properties: {
          propTest: {
            type: "object",
            title: "Additional Property Test",
            description: "Add additional properties.",
            additionalProperties: { type: "string" },
          },
        }
      }}
      validator={validator}
    />
  );
}

Attempting to add a new property results in the new key being named propTest and the value being [object Object]. Inspecting the formData yields something like:

{ "propTest": {"propTest": {}}}

Attempting to remove a property either:

1. Adds the propTest property if none exists, or
2. Does nothing if the propTest property does exist

Expected Behavior

Expect to the new properties to be named newKey when clicking the add button, and the properties to be removed when clicking the remove button.

Steps To Reproduce

1. Create a form with a nested additionalProperties schema
2. Attempt to add or remove a property

Environment

- OS: Debian 12
- Node: v24.5.0
- npm: 11.5.1

Anything else?

This issue appears to be due to the change to onDropPropertyClick in packages/core/src/components/fields/ObjectField.tsx in eb77ce9.

Since name gets added to the path downstream, the final call to onChange effectively gets called with onChange(copiedFormData, [name, name]) which results in the recursive propTest behavior from above.

[thereis]

Hey! I think it relates with #4761