When picking any of the new arrows and clicking on another arrow type, it increases the amount of the arrows you have.
Arrows are named Potions.
MC-82913
New arrows stack-able by clicking other arrows. Arrows are named Potions
Resolved
Duplicate
1
Here's a video (gif) of this in action. F3 at the beginning shows specs/version in case that makes any difference. gfycat.com/AncientIncredibleHousefly