Inverted textures in command blocks

^{Update by [Mojang] Mega_Spud (Jay Wells):}
Summary:
The arrows on the sides of command blocks point in the wrong direction

Steps to Reproduce:

1. Place command blocks in a row
2. Look at the arrows on the sides of the command block
3. On one side the arrows are pointing in the wrong direction

Observed Results:
The arrows on the top point in the correct direction, but the arrows on the sides point the wrong way

Expected Results:
The arrows should point in the direction that the sequence of command blocks follows.

Screenshots/Videos attached: Yes

Notes:

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Original Description:
This screenshot says it all