It actually is. Abusing exceptions as the normal control flow is a crude anti-pattern. Obviously the normal flow of control is not exceptional behavior. Therefore, abusing exceptions and exception-handling mechanisms to implement the happy path is simply wrong at many levels, from conceptual to practical, and in the end actually cause problems and hard to find buga such as the problems described in this bug report.
It actually is. Abusing exceptions as the normal control flow is a crude anti-pattern. Obviously the normal flow of control is not exceptional behavior. Therefore, abusing exceptions and exception-handling mechanisms to implement the happy path is simply wrong at many levels, from conceptual to practical, and in the end actually cause problems and hard to find buga such as the problems described in this bug report.