As you can already expect, I'm trying to Move the playing player as also other players with the MovePlayerPacket. But the client doesn't move the player, only the Rotation gets applied and some kind of momentum when I send the packet and the player is already moving.
I tried every Mode and there is no real difference at all.

I also checked everything a bunch times, and the packet is valid.

I'm using the protocol version 389 and there is on every platform the same behavior.
When needed I would also add an logging of all packets which get send, but there is also nothing special because everything else works just as expected.