Unable to locate sign!
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I have been having a problem recently where I get an error message and for some reason a Clone of me appears. The error message reads: "Unable to locate sign at [coordinates]"

It's very interesting, because when I kill it, spawns duplicate items. This is very annoying as sometimes I get stuck in Nether portals and due to the 1.8 bug I am stuck in an infinite loop of portal spawning and I disconnect because of it. It is extremely annoying and I am not running any mods.
This only happens when I login.
Any solutions?
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Images: Enric Cruz López, Tirachard Kumtanom, Tim Gouw, Laura Tancredi
