Start a server, open minecraft with the same account twice, login at the server in both clients
I've tested both with online and offline server mode
What Went Wrong
I was expecting that old player will be kicked, but actually both clients could join the server.
After that, server worked fine, each of my clients were actually a separate player with own position etc., but I could not see each other (while I can with 2 different accounts)
Additional Information
I think this should be handled in valence, and not in third party plugins
Valence Version
bbb8aa57c14bde097d3685be27450bd5253c8ec6
What You Did
Start a server, open minecraft with the same account twice, login at the server in both clients I've tested both with online and offline server mode
What Went Wrong
I was expecting that old player will be kicked, but actually both clients could join the server. After that, server worked fine, each of my clients were actually a separate player with own position etc., but I could not see each other (while I can with 2 different accounts)
Additional Information
I think this should be handled in valence, and not in third party plugins