Piston Arm Graphic Glitch in End

I can confirm this with a vanilla Minecraft 1.4.5.

Can confirm. It seems this is a lighting issue. If you place a torch next to the piston, it looks normal.

Is this still a concern in the latest Minecraft version 14w05b? If so, please update the affected versions in order to best aid Mojang ensuring bugs are still valid in the latest releases/pre-releases.

Fixed in 1.7.9.