All model properties wrapped into array

Q&A (please complete the following information)

• OS: RockyLinux
• Browser: Firefox/Chrome
• Version: 128/132
• Method of installation: npm
• Swagger-UI version: 5.19
• Swagger/OpenAPI version: swagger 2.0 & openAPI 3.0

Content & configuration

Reproducable with petstore.swagger

Describe the bug you're encountering

Why all properties are presented in an array even if they are not an array?

    "ApiResponse": {
      "type": "object",
      "properties": {
        "code": {
          "type": "integer",
          "format": "int32"
        },
        "type": {
          "type": "string"
        },
        "message": {
          "type": "string"
        }
      }
    },

To reproduce...

const express = require("express");
const pathToSwaggerUi = require("swagger-ui-dist").absolutePath();

const app = express();

app.use(express.static(pathToSwaggerUi));

app.listen(3000);

Go to localhost:3000 and look at one model

Expected behavior

Expect to have properties not wrapped in an array

Screenshots

Start by running the provided Express setup with swagger-ui-dist and reproduce the model view using petstore.swagger. Compare the displayed ApiResponse properties with the schema, and consider the issue complete when non-array properties are shown without array wrapping.