Hi,
I have a REPL showing the issue.
I am using DataAnnotation where possible in my application and I was expecting the DisplayFormat attribute to be applied in the DateTimePicker like it is for DatePicker but as shown in the REPL link below it's not. I will use a workaround of applying the Format attribute everywhere but I would appreciate this being changed.
https://blazorrepl.telerik.com/GdkpcclE28sZ9VZH54