Proxy server switch from 1.16+ server to sub 1.16 server broken

[pinkpig58]

/viaversion dump Output

https://dump.viaversion.com/2797c894e126e5d06f4ae38f015498973db688e7f3bdcf484005a2b301d50b00

Console Error

https://paste.gg/p/anonymous/e0320baf32f44fa18cf529c82aa478b4

Bug Description

When switching from a 1.18.2 server to a 1,12,2 server (maybe other older servers) you get kicked.

Steps to Reproduce

1. Create a Bungeecord server with the entry server being 1.12.2 and one of the other servers being 1.18.2
2. Connect to the Bungeecord network, first connecting to the 1.12.2 server
3. Send yourself to the 1.18.2 server
4. Send yourself back to the 1.12.2 one
5. Get kicked

Expected Behavior

You should be able to transfer between servers of different protocols without being kicked.

Additional Server Info

I'm using the latest version of BungeeCord and ViaVersion-DEV. No other plugins are installed.

Checklist

• Via plugins are only running on EITHER the backend servers (e.g. Paper) OR the proxy (e.g. BungeeCord), not on both.
• I have included a ViaVersion dump.
• If applicable, I have included a paste (not a screenshot) of the error.
• I have tried the latest build(s) from https://ci.viaversion.com/ and the issue still persists.

[Barvalg]

[kennytv]

That's a general thing with proxy server switches from 1.16+ to sub 1.16 servers if Via is on the proxy (no error before, but it didn't actually work either)

[pinkpig58]

Is there not a simple solution to this other than putting ViaVerison on the backend server rather than the Proxy?