The exceptions mechanism does not work at all Noté 1 sur 5 étoiles
even not the default exceptions.
Unfortunately the author does not reply on support emails.
Exceptions work as designed
I believe you are misunderstanding what Exceptions are. When in the Exceptions tab, click the Help button for details. (I'm prepared to admit that "Exceptions" isn't a terribly good name for the actual feature. Happy to receive suggestions.)