Describe the bug
substituting armor with a right click (or armor stand) doesn't remove the increase in health from the armor currently on if both sets have health boost

To Reproduce

1. Have a pair of armor pieces that cover the same armor slots, both enchanted with health boost.
2. Put on one of the two armor pieces any way you wish.
3. Holding the other armor piece, right-click to switch between both pieces.
4. Continue right-clicking to switch between pieces as many times as you'd like
5. Observe as your health bar grows indefinitely.

Expected behavior
Enchanted armor does concede a health boost, but that boost is over once you remove that armor. You only experience that increase from the sets you are currently wearing.