If the escape sequence is a string, the backslash is doubled.

[yamamotoshuto]

If I write such an example to express an escape sequence like \n or \t as a string in the sample,

example: 'foo \n bar'

The sample is output like this.

{
    "test": "foo \\n bar"
}

There is no way to express this sample.

{
    "test": "foo \n bar"
}

[RomanHotsiy]

In the upcoming version of Redoc (coming a bit later today) use:

example: "foo \n bar"