So I was playing around on my vanilla server world building stuff, when I noticed that in one of the chunks I was getting lag only when I sprinted west. The weird thing was that it was only laggy while sprinting west in that chunk; there was no lag when I sprinted in any other direction.
I trouble-shooted the world, but that did nothing. I knew that it couldn't be entity lag because there were no entities in that chunk.
Is this still an issue in the current Minecraft Snapshot 15w46a or later? If so, please update the affected versions in order to best aid Mojang ensuring bugs are still valid in the latest releases/pre-releases.