Problem with Schema.Union and Schema.extend

const FieldBase = Schema.Struct({
  id: Schema.String,
  name: Schema.String,
  description: Schema.optional(Schema.String)
})

const TextField = Schema.extend(
  FieldBase,
  Schema.Struct({
    type: Schema.Literal("text")
  })
)

const NumberField = Schema.extend(
  FieldBase,
  Schema.Struct({
    type: Schema.Literal("number"),
    options: Schema.Struct({
      precision: Schema.Number
    })
  })
)

const FieldSchema = Schema.Union(
  TextField,
  NumberField
)

export type FieldSchema = typeof FieldSchema.Type

const CreateFieldSchema = FieldSchema.pipe(Schema.omit("id"))

const numberField = Schema.decodeUnknownSync(CreateFieldSchema)({
  name: "Number Field",
  type: "number",
  options: { precision: 1 }
}) 
/* Output: The `options` property is omitted.
   { name: 'Number Field', type: 'number', description: undefined }
*/

const textField = Schema.decodeUnknownSync(CreateFieldSchema)({
  name: "Text Field",
  type: "text"
})
/* Output: This works as expected.
   { name: 'Text Field', type: 'text', description: undefined }
*/