Tipped arrows fire as normal arrows when held in off hand

Steps to Reproduce:

1. Obtain a bow and tipped arrows
2. Enchant the bow with Infinity
3. Place the tipped arrows in the off-hand slot
4. Fire the bow

Observed Results:
A normal arrow is fired.

Expected Results:
The tipped arrow should be fired.

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Original Description:
When firing tipped arrows held in off hand bow fires normal arrows. If the arrows are placed in inventory they fire as tipped arrows with effect.

Bow is enchanted with:

Power IV, Infinity, Fire, Punch II, and Unbreaking III

Also, tipped arrow in off hand is not consumed, at first I thought it was a bug that was allowing infinite tipped arrows, but I fired at wall and noticed there was no effect particles from bow.