Plex on separate subnet

Plex Media Server Desktops & Laptops
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I’ve been reading over and over that Plex doesn’t like being on a different subnet. I’m testing a new local server build in Ubuntu 18. With thoughts of running a couple servers on it in the future, I plugged it into a separate subnet on my Ubiquiti router.

192.168.1.xxx = main network subnet
192.168.3.xxx = Plex server (192.168.2.xxx is in use)

From what I’m reading this should not work but it appears it is working just fine with no adjustments to Plex and no port forwarding. All my devices on the main subnet show the new Plex server nearby. I assume I could add the subnet firewall protections with Plex port forwarding and it should still work?

What am I missing here? What is going to bite me soon?

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Same subnet is primarily for claiming, but when said, I would guess not all clients behave nicely and detects, that other subnet is local, and as such, might be restricted to remote settings, or even relayed

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There’s a number of clients that might fail to see your server if they are on a different subnet.
However… as you have a Plex Pass you can tell Plex what networks to consider as local in Settings > [Server Name] > Network > LAN Networks

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