Boolean schema `false` is ignored · rjsf-team/react-jsonschema-form

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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.

core

5.x

Given the following schema:

{
  "type": "number",
  "if": {
    "const": 13
  },
  "then": false
}

Value 13 is a valid value.

In JSON Schema, false equals {"not": {}} link to spec

Thus, the schema above with value 13 should be invalid.

Expected: validation fails

Actual: Form submitted

If you click "Raw validate", you can see the AJV validation error.

Playground

Please note that if false is replaced with {"not": {}}, everything works as expected: playground

Research direction: Investigate how the library handles boolean schemas in conditional branches (if/then/else). The validation logic likely resides in `src/utils/validate.js` or similar. The issue mentions that replacing `false` with `{"not": {}}` works, so the fix likely involves converting boolean values to equivalent schema objects before validation. Check the AJV configuration and how schemas are processed. Look at how the `then` keyword is resolved when it is a boolean. The existing playground links provide reproduction cases.
Tech stack: typescriptreactnodejs
Domain: frontend
Issue type: Bug
Difficulty: 3
Estimated time: 1-3 hours
Activity status: Active
Clarity: Clear
Prerequisites: Basic knowledge of JSON SchemaFamiliarity with ReactUnderstanding of AJV validation
Newbie friendliness: 60