Apologies if I missed reading a change log or overlooked a Forum entry.
Just wondering of change of behaviour. I have configured my IP reservations in the way that multiple MAC address would get same IP (e.g. wired and wireless interface of my PC).
The DHCP entry looks like this
config host
option name 'printer'
option ip '192.168.100.24'
option mac '30:05:5c:40:04:ff 14:2d:27:96:02:25'
On 18.06 on the DHCP/DNS Page in LUCI this would have been displayed correctly. But on 19.07 it just shows none in the MAC field