We apologize for the inconvenience you encountered. We recently upgraded our backend application to .NET Core 8.0 with the aim of improving performance and efficiency. However, during our testing, we did not notice any significant differences. Upon receiving your feedback, we promptly reverted back to the original version with the capital first letter format.

The issue arose due to the default settings of .NET Core. In .NET Core and ASP.NET Core applications, the JSON serialization process typically converts property names to camelCase format. This convention, where the first letter is lowercase and subsequent concatenated words begin with an uppercase letter, is commonly used in JavaScript and JSON standards. ASP.NET Core’s default settings adhere to this convention.

Since .NET Core 3.0, ASP.NET Core has adopted System.Text.Json as the default JSON serializer. System.Text.Json’s default behavior is to serialize property names in camelCase.

Thank you for bringing this matter to our attention. We are always available to provide support whenever you need it.