Very regulary when I chat, the message is sent twice. I expect it to be sent once only. It happens on different Multiplayer servers, I haven't tested it on singleplayer.
Comments 3
I'm not sure but does that matter? My client is not modded and the client should send the packets once. That doesn't depend on the server, does it?
At times it can be difficult to determine underlying causes for network related issues (or seemingly related to network). Modded servers such as bukkit/spigot have been known to make changes to network protocol, so by recreating the issue in strictly vanilla it's easier to isolate the cause of the problem.
Does this occur on vanilla multiplayer servers specifically?