In version 2.0, when hosting on LAN, I can see the host, but I can’t join. However, in previous patches before 2.0, I could see the host and join LAN games normally
Something may have changed in your local network environment. You may want to verify that other games with LAN support still work as expected. LAN mode seems to be functioning as expected on my end.
Also, silly as it may sound, make sure that the host actually creates the game from the LAN screen and not from the custom games screen. Probably not the problem, but just covering all even remotely possible bases.