Resolution: Works As Intended
Minecraft 14w28b, Minecraft 14w29b, Minecraft 1.8.8, Minecraft 15w46a, Minecraft 15w47c, Minecraft 15w49b, Minecraft 1.9.4
Placed repeat command blocks with the commands
/effect @p regeneration 1 <0-4>
This causes the regeneration effect to be visually applied with particles and a flickering health bar, however it does not heal the player.
How to reproduce:
-In a minecraft 1.9 world, place a repeat command block and enter the above command, replacing "<0-4>" with a number from 0 to 4.
-type "/gamerule naturalRegeneration false"
-Apply damage to yourself in survival mode
- Notice the particles and movement on the health bar, but lack of health regen.
-Effects that fail to work include: Wither, Nausea, Regeneration, Health Boost, etc...