Sorting by hostname in Services > DHCP Server > LAN should be "natural" (alphanumeric friendly)
Under "Services > DHCP Server > LAN" if I sort the 'static mappings' table by the hostname column, I get results like:
when I would expect:
I don't know PHP, but a quick google suggests you need to use "SORT_NATURAL":
Likely there are other tables on other screens with this same issue.