Found while testing MC-251254.

The bug

The texture used for the base of the end rod appears to be incorrect and less symmetric. While the base is 4×4 pixels, the corresponding region appears to be 4×5, meaning that one of the sides will not have the dark border that the other sides do.

How to reproduce

1. Place an end rod, preferably in midair
2. Inspect the underside

Expected results

The underside would be fourfold symmetric.

Actual results

It is not.

How to fix

A fixed version of the end rod texture is attached which fixes this issue and MC-251254 - simply replace vanilla's end rod texture with this one. Mojang have my full permission to use this texture file.