Fence sides have incorrect texturing

The texturing of some of the side parts of fences are incorrect. If the logic for the texturing of similar blocks such as walls, buttons, pressure plates etc is applied, then a part on the fence should be mapped to the same part of the texture that would be there if it was a full block. For most of the fence this is the case, but for the sides of the two parts to the right of the post when viewed from any direction, the UV is seemingly 7 pixels too far to the left from where it should be. This happens when viewing from he north, south, east and west and on all fence types.