"Object reference not set to an instance of an object." exception when unevaluatedProperties defines specific types

[SkyKnight]

This is my intentionally complicated example JSON schema:

{
    "$id": "configuration-entry",
    "$schema": "https://json-schema.org/draft/2020-12/schema",
    "type": "object",
    "allOf": [
        {
            "if": {
                "properties": { "type": { "const": "form" } }
            },
            "then": {
                "allOf": [
                    {
                        "properties": {
                            "components": {
                                "type": "object",
                                "additionalProperties": {
                                    "type": "object",
                                    "allOf": [
                                        {
                                            "if": {
                                                "oneOf": [
                                                    {"properties": { "type": { "const": "text" } }},
                                                    {"properties": { "type": { "const": "text-plus" } }}
                                                ]
                                            },
                                            "then": {
                                                "unevaluatedProperties": {
                                                    "type": ["string", "number"]
                                                }
                                            }
                                        },
                                        {
                                            "if": {
                                                "properties": { "type": { "const": "image" } }
                                            },
                                            "then": {
                                                "unevaluatedProperties": {
                                                    "type": ["string", "number"]
                                                }
                                            }
                                        }
                                    ],
                                    "properties": {
                                        "type": {
                                            "type": "string"
                                        }
                                    },
                                    "required": ["type"]
                                }
                            }
                        },
                        "required": ["components"]
                    }
                ]
            }
        }
    ],
    "properties": {
        "type": {
            "type": "string"
        }
    },
    "required": ["type"]
}

And my example wrong simple JSON file:

{
    "type": "form",
    "components": {
        "first": {
            "type": "text",
            "param1": 1,
            "alignement": "left"
        },
        "second": {
            "type": "image",
            "param1": "1",
            "meta": {
                "location": "nowhere",
                "date": "now"
            }
        },
        "third": {
            "type": "text-plus",
            "param1": 1,
            "alignement": "left"
        }
    }
}

Expectation: validation error showing me that $.components.second.meta element is invalid (should be number or string instead of object).

Current situation:

System.NullReferenceException: Object reference not set to an instance of an object.
   at Newtonsoft.Json.Schema.Infrastructure.Validation.SchemaScope.GetValidationErrors()
   at Newtonsoft.Json.Schema.Infrastructure.Validation.ObjectScope.EvaluateTokenCore(JsonToken token, Object value, Int32 depth)
   at Newtonsoft.Json.Schema.Infrastructure.Validation.Validator.ValidateCurrentToken(JsonToken token, Object value, Int32 depth)
   at Newtonsoft.Json.Schema.JSchemaValidatingReader.ValidateCurrentToken()
   at Newtonsoft.Json.Schema.SchemaExtensions.Validate(JToken source, JSchema schema, SchemaValidationEventHandler validationEventHandler)
   at Newtonsoft.Json.Schema.SchemaExtensions.IsValid(JToken source, JSchema schema, IList`1& errors)

ajv command line shows correct JSON data error:

>ajv -s schema.json -d data.json --spec=draft2020
strict mode: use allowUnionTypes to allow union type keyword at "configuration-entry#/allOf/0/then/allOf/0/properties/components/additionalProperties/allOf/0/then/unevaluatedProperties" (strictTypes)
strict mode: use allowUnionTypes to allow union type keyword at "configuration-entry#/allOf/0/then/allOf/0/properties/components/additionalProperties/allOf/1/then/unevaluatedProperties" (strictTypes)
data.json invalid
[
  {
    instancePath: '/components/second/meta',
    schemaPath: '#/allOf/0/then/allOf/0/properties/components/additionalProperties/allOf/1/then/unevaluatedProperties/type',
    keyword: 'type',
    params: { type: [Array] },
    message: 'must be string,number'
  }
]

library version: <PackageReference Include="Newtonsoft.Json.Schema" Version="3.0.15" />