Number with ui:widget updown type uses "minimum" for both "minimum" and "multipleOf"

[como-pearl]

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?

antd

Version

5.19.4

Current Behavior

The "minimum" value, in absence of a "multipleOf" value, appears to be used as the "multipleOf" value as well.

Screen.Recording.2025-08-25.at.2.04.40.PM.mov

Expected Behavior

The "minimum" value should not be used as the "multipleOf" value as well.

Steps To Reproduce

1. Go here: react-jsonschema-form playground
2. Input this into JSONSchema:

{
  "title": "A registration form",
  "type": "object",
  "properties": {
    "age": {
      "type": "number",
      "title": "Age",
      "minimum": 0
    }
  }
}

3. input this into UiSchema:

{
  "age": {
    "ui:widget": "updown"
  }
}

4. Insert any integer multiple (even float versions) into the form. Examples: 1, 1.0, 1.000. No validation errors
5. Insert any float value into the form. Examples: 12.01, 12.1. Validation error. Note that it appears the minimum value also by default becomes the multipleOf value. Note that there are no raw AJV errors encountered
6. Remove "ui:widget": "updown" from the UiSchema section. Note that on submit, field validation passes.

Environment

- OS:
- Node:
- npm:

Anything else?

No response

[heath-freenome]

@como-pearl I tried your example in the playground with antd and the latest version does not reproduce the issue you are reporting. Looking at the RJSF source code, nowhere in the code do we assign multipleOf to anything unless the schema contains it. Can you provide us with a working example?

I looked at your video and what appears to be showing is HTML 5 validation, which has nothing to do with RJSF. you can turn that off using the Disable HTML 5 validation option

[como-pearl]

Hello @heath-freenome - thanks for your input. It does appear this is an html5 form validation error, thanks.