Note: NONE OF THIS IS MADE UP.
So I was playing factions on a server, alone and then i clicked tab. Then flickering on the tab bar with the online players was this guy named bob and his name was just flickering. it was pretty odd. So i was walking near some horses, and then this guy with the name bob just was flickering near them. He had an Alex (or whatever it's called)skin. I decided to just close my game. I swear this actually happened. You may not believe me, but whatever. (wasnt able to get screenshots because of rapid flickering) *EDIT*: Was able to get a screenshot.