When using the /clone command repeatedly, rendering will glitch out a few chunks away from you.
Video Demonstration:
http://www.twitch.tv/mrotherman/b/505931003
MC-49654
/Clone Rendering Glitches
Resolved
Incomplete
1
(Unassigned)
Unconfirmed
Minecraft 14w08a, Minecraft 14w11b, Minecraft 14w21b, Minecraft 14w25a, Minecraft 14w25b
Retrieved
Is this still a concern in the current Minecraft version? If so, please update the affected versions in order to best aid Mojang ensuring bugs are still valid in the latest releases/pre-releases. If this has been done, we can reopen the issue.
Keep in mind that the "Resolved"-Status on this ticket just means "Answered", and that we are waiting for further information on whether this issue still exists or not. We will reopen it as soon as the requested information has been delivered.