The bug

The texture used for the bottom of the central rod in the brewing stand is incorrect. The rod has a yellow to orange gradient from the top to the bottom. However, the bottom face defies this by being yellow instead of orange.

How to reproduce

1. Place a brewing stand on a visually transparent block, or in the air
2. Look at it from below

Expected results

The bottom of the rod would be orange.

Actual results

It is yellow.

How to fix

This could be fixed by simply mapping that region to somewhere lower down on the rod texture. I've opted for a less lazy fix: the resource pack attached to this ticket modifies the brewing stand base texture to include textures for the top and bottom of the brewing stand in an otherwise unused region of the texture (I've checked). This way, the top and bottom of the rod can be given unique textures in resource packs without the side texture interfering and forcing resource pack creators to create their own custom model. I'd recommend that Mojang implements the fix I have attached instead of the "lazy" approach.