When using the RadzenDatePicker component. If you the value is 3. Jan 2022, and you in the top of the calender choose either: 27, 28, 29, 30, 31, the value becomes x'th Dec 2022 instead of x'th Dec 2021.
Updated nuget package to the newest version (3.13.12) and it works as it is supposed to now. I was on 3.13.4. Thanks