JSON Schema - 'allOf' nested within the 'array' type field breaks the form

[Mhal007]

When allOf is nested within the array type property, the form no longer works correctly. I'm not able to add new nested fields using the + button - they are not appearing.

Schema that I've used:

const schema = {
    title: 'Form',
    type: 'object',
    properties: {
      parentField: {
        items: {
          type: 'object',
          properties: {
            childField: {
              type: 'string',
            },
          },
          allOf: [{ required: ['childField'] }],
        },
        type: 'array',
      },
    },
  };

Result:

[radekmie]

Hi @Mhal007. It looks like the problem is in the merging part (v2, v3). Probably changing {} to _definition.properties ?? {} and [] to _definition.required ?? [] will do the job. Could you check it locally?

[Mhal007]

Unfortunately, it ain't it. Still, the same issue occurs.