It's not a hubitat issue though, it's a SiLabs SDK issue. It can happen in all z-wave hubs. ST, Hubitat, Vera, etc... Ghosts are created generally from either failed pairing or from removing devices from the hub without excluding them first. Whenever you have a failed pairing STOP. Go to the settings>>z-wave details page and look for the ghost. Remove the ghost, factory reset the device then try pairing again. Also since you're new, have a look at this post. It may help avoid some gotchas.
Download the Hubitat app
