Recognizes ping but no connection request

[LinkZeldasGuard]

Whenever a client refreshes OR tries to connect, the log shows "a prince has taken a quick peek".
This doesn't seems to be affected by modded or vanilla clients.
The server port is assigned correctly.
It is also possible to start the server using the Web UI, so the startup command works.
The server itself is a modded fabric server.
Connection is shared through a ZeroTier network, but that shouldn't be a problem, the ping is detected after all, just not the connection.
sleepingSettings.yml.txt

[vincss]

Hi,
Which versions are you using ? ( Clients & Servers )

[LinkZeldasGuard]

Hi, Which versions are you using ? ( Clients & Servers )

1.20.4 for both, the minecraft nodejs project is available for it and i compiled the latest rep as there wasnt a release for that version yet.

[Jailoris]

Having the same issue on a Fabric server behind a Velocity proxy.
I'm using the "modern" player info forwarding method (1.13+)
Although, the server does start normally when connecting directly or by using the WebUI.

[Shad0wolf0]

same as above, pics and all. running latest purpur 1.20.4 b2176 and velocity 3.3 b397