I have not tried it with Mojave clients talking to an older server e.g. Lion so cannot comment on that.
However I can say that over time since Mavericks and with subsequent releases Apple have conspired to make the use of Network Logins (and Network Home Directories) harder and harder. By now most battle hardened Mac admins have long since had to give up.
The main problems that have occurred are as follows -
- Apple introduced the 'local items' keychain to store passwords, this is used by Apple applications such as Mail, Calendar, Contacts and Safari. It is effectively impossible to use the local items keychain across multiple Macs with network home directories when 'hot desking' because it is stored in a folder named after the unique UUID number of an individual Mac
- Apple over time have changed from using plists or similar to increasingly using SQLite databases. SQLite really really does not like accessing databases stored on a network file server and will frequently corrupt said databases, this also applies to the 'local items' keychain which is as no surprise a SQLite database
- When you login as a network login user with a network home directory and then logout and then log back in it can be the case that files and/or processes have not been closed properly by the Mac operating system and/or Mac file server resulting in files apparently being 'busy' and inaccessible. This often required rebooting the file server or at best stopping and starting it which of course disconnects all users.
- Possibly related to the above Spotlight used to go insane with Network Home Directories and would start fully reindexing the users entire Network Home Directory including potentially tens of thousands of emails each time the user logged in. This caused enormous amounts of network traffic and file server activity (with multiple users) typically first thing in the morning often lasting till lunch time and brought performance to its knees. No excluding the Network Home Directory from Spotlight indexing is not a solution because users want in particular to be able to search their emails!
- I am sure there are other issues I have (thankfully) since forgotten :(
As an aside I at one point considered writing a long in-depth blog article entitled - "Network Home Directories, the good, the bad and the very very ugly". :( Not that I expected Apple to change their direction.
Sadly Apple seem to think everyone is using just an iPhone and/or iPad individually assigned to them, or sometimes remember people also use MacBook laptops. They have completely forgotten their education roots and that education is not drowning in money and needs to share computers in labs. :(
One might now be able to argue businesses no longer even in the Windows world hot desk between desktop computers. However in the Windows world it is possible to setup and use a 'Virtual Desktop Environment'. The licensing for macOS makes it effectively impossible to setup an equivalent VDI infrastructure for Macs even if technically it might be possible. :(
Apple - Read. My. Lips. iCloud is not a business solution it is a consumer solution. :( Therefore iCloud Drive as a poor mans network home directory is not a solution.