Swagger-ui: Could not click on the item in the Parameter Content Type box in 3.13.2 -> 3.13.6

[hnthu]

| Q | A
| ------------------------------- | -------
| Bug or feature request? |
| Which Swagger/OpenAPI version? |
| Which Swagger-UI version? |
| How did you install Swagger-UI? |
| Which browser & version? |
| Which operating system? |

Demonstration API definition

When you reference to a json file or yaml file in your main json file or yaml file.
and the reference json file you define a consumes which contains more than one item.
Then you could not chose the other item in the parameter content type

put a $ref in your main.json

 "/v1/book": {
        "$ref": "book.json#/buy"
    },

and in book.json:

{
"post": {
"description": "Book",
"operationId": "buy",
"summary": "Buy a book",
"tags": [
"Book"
],
"consumes": [
"application/json",
"application/xml"
],
"parameters": [
{
"name": "requestBody",
"in": "body",
"description": "Buy a Book",
"required": true
}
]
}
}

Expected Behavior

User could click on the application/xml successfully.

Current Behavior

User couldn't click on the application/xml. After click on the application/xml the GUI still use application/json.

Possible Solution

I thought the bug was happened after the fix for path item $ref rendering (via #4381) in 3.13.2

[shockey]

Bug confirmed!

I just finished a fix, which will be released today. Sorry for the trouble, and thanks for reporting!

[hnthu]

A Massive thank you shockey for supporting this problem very quickly. Thank you very much.

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