Spigot signed command arguments breaks Bungeecord commands

Bungeecord version

git:BungeeCord-Bootstrap:1.20-R0.1-SNAPSHOT:2d6d89d:1721 by md_5

Server version

This server is running CraftBukkit version 3843-Spigot-b41c46d-4be756e (MC: 1.20.1) (Implementing API version 1.20.1-R0.1-SNAPSHOT)

Client version

1.20.1

Bungeecord plugins

A simple plugin which adds the command /msg to bungeecord

The bug

If a Bungeecord plugin adds a command with a name which is also used on the spigot server, which has signed command arguments (e.g. the second argument of /msg) and then the player types the command including the signed command arguments, then presses enter and then sends another normal message, then the player will be kicked with the message

disconnected with: Received chat packet with missing or invalid signature

Log output (links)

disconnected with: Received chat packet with missing or invalid signature.

Checking

[X] I am using BungeeCord and not a fork. Issues with forks should not be reported here.
[X] I think this is not an issue with a bungeecord plugin.
[ ] I have not read these checkboxes and therefore I just ticked them all.
[X] This is not a question or plugin creation help request.

SpigotMC / BungeeCord