Asyncapi allOf reusable schemas creates array instead of unified object in html rendering - asyncapi

Question

I'm trying to write my first Asyncapi documentation file. I'd like to perform reusability of my schema between a reusableModel and others. However, the html documentation preview gives me an array with separate objects instead of one unified object. Here is my problematic yaml content:
asyncapi: 2.0.0
info:
title: woaw
version: 0.1.0
description: >
blabla
license:
name: UNLICENSED
defaultContentType: application/json
channels:
myChannel:
subscribe:
message:
oneOf:
- $ref: '#/components/messages/new'
- $ref: '#/components/messages/deleted'
components:
messages:
new:
payload:
$ref: '#/components/schemas/new'
deleted:
payload:
$ref: '#/components/schemas/deleted'
schemas:
reusableModel:
type: object
properties:
id:
type: string
format: uuid
example: 37a2005e-70e6-4cf3-b7e3-19e087879e50
new:
allOf:
- $ref: '#/components/schemas/reusableModel'
- type: object
properties:
type:
type: string
enum: ["extension.new"]
data:
type: object
properties:
key1:
type: object
properties:
users:
type: array
items:
type: string
deleted:
allOf:
- $ref: '#/components/schemas/reusableModel'
- type: object
properties:
type:
type: string
enum: ["extension.deleted"]
data:
type: object
properties:
key1:
type: string
You might copy/paste it to https://playground/asyncapi.io to see the rendering problem. The allOf object defined in the payload of the first messageType (new) appears as an array with in part 0 the reusableModel and in part 1 the rest of my properties (type + data) and not as unified object. The documentation involves the following:
The AsyncAPI Specification allows combining and extending model definitions using the allOf property of JSON Schema, in effect offering model composition. allOf takes in an array of object definitions that are validated independently but together compose a single object.
I think I misunderstand some part of the documentation, can you explain to me ?

Answer 1

As I've commented, it looks like a known issue:
https://github.com/asyncapi/html-template/issues/11