swagger-codegen -l html2 does not include enums if object is using inheritance and the field is missing description

Description

swagger-codegen -l html2 does not include enums if object is using inheritance and the field is missing description

Swagger-codegen version

current master; HEAD = 5de04fa6129fd22ddd32b0d03d17b1d82397d66e

Swagger declaration file content or url

swagger: '2.0'

info:
  title: "sscce"
  version: '1.0'
  description: sscce

definitions:
  Bar:
    type: object
    properties:
      bar:
        type: string

  Foo:
    allOf:
      - $ref: "#/definitions/Bar"
      - type: object
        properties:
          foo:
            type: string
            enum:
              - qux
              - quux

paths:
  /foo:
    post:
      parameters:
        - name: foo
          in: body
          schema: {$ref: "#/definitions/Foo"}
      responses:
        "200":
          description: foo
          type: string

Command line used for generation

JAR=".../swagger-codegen.git/modules/swagger-codegen-cli/target/swagger-codegen-cli.jar"
java -jar "${JAR}" generate -i ~/sscce.yaml -l html2 -o foo

In the result, the Foo.foo enum is not rendered. If you either remove inheritance or add description to Foo.foo, the enums are rendered again.

Start by reproducing the supplied YAML with the swagger-codegen CLI using the html2 generator, then compare output with and without inheritance or a field description. Trace the html2 generation path and confirm completion when the Foo.foo enum values are rendered in the generated documentation.