I am going to tell you all a story about a glitch i found with the no fly setting on servers. I was playing one of my favorite Minecraft survival servers. I was out trying to get a sheep on a tall mountain so I decided I would take some vines up the mountain, I have no idea how they got there. As soon as the vines ended there was a column of vines right next to the one I was on, so I moved from the top of one column to the bottom of the other. I didn't think this would happen but I got disconnected from the server and it gave me the message