Swagger UI Freeze/Crash - Asp.Net Core 3.1.

I am using swashbuckle in my ASP.Net Core 3.1 with swagger UI. When I hit the methods whose response is bit long, UI crashes while same is working fine in postman. Below is swagger json file.

{
"openapi": "3.0.1",
"info": {
"title": "v1",
"version": "v1"
},
"servers": [
{
"url": "http://localhost:62242"
}
],
"paths": {
"/api/Content/GetContentTypeFields": {
"get": {
"tags": [
"Content"
],
"parameters": [
{
"name": "className",
"in": "query",
"schema": {
"type": "string"
}
},
{
"name": "siteName",
"in": "query",
"schema": {
"type": "string"
}
}
],
"responses": {
"200": {
"description": "Success",
"content": {
"text/plain": {
"schema": {
"$ref": "#/components/schemas/ContentTypeRoot"
}
},
"application/json": {
"schema": {
"$ref": "#/components/schemas/ContentTypeRoot"
}
},
"text/json": {
"schema": {
"$ref": "#/components/schemas/ContentTypeRoot"
}
}
}
}
}
}
},
"/api/Content/GetContentData": {
"get": {
"tags": [
"Content"
],
"parameters": [
{
"name": "pageAliasPath",
"in": "query",
"schema": {
"type": "string"
}
},
{
"name": "siteName",
"in": "query",
"schema": {
"type": "string"
}
}
],
"responses": {
"200": {
"description": "Success",
"content": {
"text/plain": {
"schema": {
"type": "object",
"additionalProperties": {
"type": "array",
"items": {
"$ref": "#/components/schemas/ColumnNames"
}
}
}
},
"application/json": {
"schema": {
"type": "object",
"additionalProperties": {
"type": "array",
"items": {
"$ref": "#/components/schemas/ColumnNames"
}
}
}
},
"text/json": {
"schema": {
"type": "object",
"additionalProperties": {
"type": "array",
"items": {
"$ref": "#/components/schemas/ColumnNames"
}
}
}
}
}
}
}
}
},
"/api/Content/GetContentWithColumnsFilter": {
"get": {
"tags": [
"Content"
],
"parameters": [
{
"name": "pageAliasPath",
"in": "query",
"schema": {
"type": "string"
}
},
{
"name": "columns",
"in": "query",
"schema": {
"type": "string"
}
},
{
"name": "siteName",
"in": "query",
"schema": {
"type": "string"
}
}
],
"responses": {
"200": {
"description": "Success",
"content": {
"text/plain": {
"schema": {
"type": "object",
"additionalProperties": {
"type": "array",
"items": {
"$ref": "#/components/schemas/ColumnNames"
}
}
}
},
"application/json": {
"schema": {
"type": "object",
"additionalProperties": {
"type": "array",
"items": {
"$ref": "#/components/schemas/ColumnNames"
}
}
}
},
"text/json": {
"schema": {
"type": "object",
"additionalProperties": {
"type": "array",
"items": {
"$ref": "#/components/schemas/ColumnNames"
}
}
}
}
}
}
}
}
},
"/api/Content/GetCategories": {
"get": {
"tags": [
"Content"
],
"parameters": [
{
"name": "siteName",
"in": "query",
"schema": {
"type": "string"
}
},
{
"name": "CategoryID",
"in": "query",
"schema": {
"type": "integer",
"format": "int32"
}
}
],
"responses": {
"200": {
"description": "Success",
"content": {
"text/plain": {
"schema": {
"type": "array",
"items": {
"$ref": "#/components/schemas/Category"
}
}
},
"application/json": {
"schema": {
"type": "array",
"items": {
"$ref": "#/components/schemas/Category"
}
}
},
"text/json": {
"schema": {
"type": "array",
"items": {
"$ref": "#/components/schemas/Category"
}
}
}
}
}
}
}
},
"/api/Content/GetAllContentWithColumnsFilter": {
"get": {
"tags": [
"Content"
],
"parameters": [
{
"name": "pageAliasPath",
"in": "query",
"schema": {
"type": "string"
}
},
{
"name": "columns",
"in": "query",
"schema": {
"type": "string"
}
},
{
"name": "siteName",
"in": "query",
"schema": {
"type": "string"
}
}
],
"responses": {
"200": {
"description": "Success"
}
}
}
}
},
"components": {
"schemas": {
"Category": {
"type": "object",
"properties": {
"categoryID": {
"type": "string",
"nullable": true
},
"categoryName": {
"type": "string",
"nullable": true
},
"categoryDisplayName": {
"type": "string",
"nullable": true
},
"categoryDescription": {
"type": "string",
"nullable": true
},
"categoryLevel": {
"type": "string",
"nullable": true
},
"categoryNamePath": {
"type": "string",
"nullable": true
}
},
"additionalProperties": false
},
"ColumnNames": {
"type": "object",
"properties": {
"columnname": {
"type": "string",
"nullable": true
},
"columnvalue": {
"type": "string",
"nullable": true
}
},
"additionalProperties": false
},
"ContentTypeRoot": {
"type": "object",
"properties": {
"types": {
"type": "array",
"items": {
"$ref": "#/components/schemas/Type"
},
"nullable": true
}
},
"additionalProperties": false
},
"IElement": {
"type": "object",
"properties": {
"type": {
"type": "string",
"nullable": true
},
"name": {
"type": "string",
"nullable": true
},
"controlname": {
"type": "string",
"nullable": true
}
},
"additionalProperties": false
},
"System": {
"type": "object",
"properties": {
"id": {
"type": "string",
"nullable": true
},
"name": {
"type": "string",
"nullable": true
},
"codename": {
"type": "string",
"nullable": true
},
"last_modified": {
"type": "string",
"format": "date-time"
}
},
"additionalProperties": false
},
"Type": {
"type": "object",
"properties": {
"system": {
"$ref": "#/components/schemas/System"
},
"elements": {
"type": "array",
"items": {
"$ref": "#/components/schemas/IElement"
},
"nullable": true
}
},
"additionalProperties": false
}
}
}
}

Start by reproducing the freeze or crash in Swagger UI with the supplied OpenAPI JSON, focusing on the endpoints whose responses are described as long. Compare the behavior with Postman and identify the Swagger UI entry point handling the response. Done means the affected endpoint renders without freezing or crashing.