Hi, this is an old yet small cosmetic bug, in some pages the device name or hostname isn't displaying properly when it contain spaces, looks like some users like to name their network devices with spaces which difficult the device identity initially, since this hasn't been fixed yet just posted as reminder. ;)
For example the "dhcpd.leases" are showing client-hostname correctly but somehow not being parsed properly.
Example images:
You can open a ticket for this, but looking at the ARP information specifically this is bound to break in lots of OS areas despite the fact that we could fix the parsing on the leases page.
Cheers,
Franco