Oh you just made me realize I messed up above. I did not realize OP is talking about both the old and newer Leviton devices.
For the ZW6HD please try this driver: [DRIVER] Universal Z-Wave Drivers (Switch/Dimmer)
And as stated, they do have some bugs in the original firmware regarding state change reports. After updating mine and using my driver, I found all issues were resolved.
Be aware of this also, there is no way to tell if you have the bugged firmeware or the fixed one. Only way to know is to flash the current file and see if it fixes it. Both old and new report the SAME version back to the hub.
