Using the latest release (6.1.13), whenMethodArgumentTypeMismatchException happens, something like this is logged at warn level:

Resolved [org.springframework.web.method.annotation.MethodArgumentTypeMismatchException: Failed to convert value of type 'java.lang.String' to required type 'java.time.OffsetDateTime'; Failed to convert from type [java.lang.String] to type [@org.springframework.web.bind.annotation.RequestParam @org.springframework.format.annotation.DateTimeFormat java.time.OffsetDateTime] for value [2024-09-09T8:30:00+02:00]]

It would be very useful to also log the name of the argument which caused the error, because sometimes there are multiple handler method arguments of the same type that are subject to the same conversion. I guess this means that error message should be put together inMethodArgumentTypeMismatchException rather than relying onTypeMismatchException (which does not have the necessary context).