When i made a regular firework rocket and right clicked I got dced and received the message "End of Stream" I was using optifine and modloader at the time but I uninstalled them after and tried to log in, the same message appeared again.
Environment
On a mountain. Beacon near by. below y 126 (barely)
32nd duplicate of MC-4715 , please use the search function to see if your bug has already been submitted. Currently over 35% of tickets are being closed as duplicate.