Directory autofallthrough when 4 digits inputed

The directory app with go into autofallthrough and hang up on the caller if they do not follow the instructions when asked to input 3 digits for a users last name and instead enter 4. We are running 11.6.0 off the AsteriskNow image. It would obviously be better if the app handled this event and just said it was an invalid entry. Was this behavior fixed in later versions? Is there an easy way for me to update the directory app?

Thanks

i thought there was an invalid destination in the directory setup.