The current middleware implementation allows to send in ProblemDetails:
a) only Title (default option for Production)

• title is constructed automatically from the status code name
  • Detail property is not filled
    b) Title, Details and a lot of exception details and method context and lines of source code etc. (default option for Development
• details is taken from the original exception message

Sometimes it is convenient for a client to know at least a bit of what happened, thus send Detail in the ProblemDetail in Production.

Suggested new option:
c) Title and Detail for Production environment

• Title - automatically as status code name (same as now)
• Detail - original exception message

Public API changes (new), no modification of the original public API is required (no breaking change):

ProblemDetailsOptions.MapToStatusCodeWithDetail<TException>(int statusCode)

as an alternative for the current API:

ProblemDetailsOptions.MapToStatusCode<TException>(int statusCode)

Example:

options.MapToStatusCodeWithDetail<ValidationException>(StatusCodes.Status422UnprocessableEntity);

Reference implementation which already contains this behavior:
https://stackoverflow.com/a/74487747