After further play testing, it is the same as MC-126113, however the causation between this bug and MC-126113 is different. MC-126113 mentions waiting for the underwater night vision effect to "charge-up" so to speak, granting night vision after exiting the water. What I am reporting is that if the player is half in water and half in air, the night vision effect applies, in full, instantly. And after moving fully into the water or into the air it completely goes away. I do believe what I reported is slightly different however probably caused by the same thing.
After further play testing, it is the same as MC-126113, however the causation between this bug and MC-126113 is different. MC-126113 mentions waiting for the underwater night vision effect to "charge-up" so to speak, granting night vision after exiting the water. What I am reporting is that if the player is half in water and half in air, the night vision effect applies, in full, instantly. And after moving fully into the water or into the air it completely goes away. I do believe what I reported is slightly different however probably caused by the same thing.