I recently noticed that if you vanish and a player joins the server he/she can still see you. There are no error logs. I am using VanishNoPacket 3.19.1 and Spigot 1.7.9 (#1482). Why is this happening?

Why is this happening?

No idea. What is the equivalent version of CraftBukkit, and does that happen when you use it?

Yes, it also happens with CraftBukkit. I think I know what it is... I use a plugin called "Player_Visibility". Is there a conflict between it and VanoshNoPacket?

Have you tried removing that plugin? What is that plugin's purpose?

My server is constantly crowded and I can't find a good time to test things, but I will try today. The plugin offers a visibility toggler on join, and you can choose if you want to disable players or enable them. I have limited it to work only in the spawn world of my server using PerWorldPlugins.