Input text box with String value is unresponsive while using string with space or new line in swagger

In my project i need to fetch the String value from input text box.

Input text box becomes unresponsive and it doesn't allow the String value with space or new line. When I enter the space in the input text box , this came up with default value as {} and not able to remove these braces {} .

Demonstration API definition

Our code is client specific .So i cant share the demo example

Configuration (browser query string, constructor, config.yaml)

We are using swagger.json which is generated at run time

Configuration for message body in swagger.json is show below

Expected Behavior

swagger message box should allow space and new line

Current Behavior

When we are using space in the message box , the {} are filled in the message box

Possible Solution

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Context

We addressed this issue while testing values with space in the message box.Searched in google and found the same kind of issue has been reported already https://github.com/swagger-api/swagger-ui/issues/3271 .But this is not yet resolved

Start by reproducing the issue in Swagger UI 3.3.1 with the provided swagger.json message-body configuration, focusing on input containing spaces or newlines. Done means the message box remains responsive and preserves editable text without inserting or trapping {}.