When you have regeneration status effect in hardcore mode, the healing animation is messed up. It just doesn't animate up properly when regenerating.

Steps to Reproduce

1. Create a new hardcore mode world with coordinates enabled, with seed number 71
2. Go to the nearest igloo at -168, 88
3. Break the carpet and go to the basement
4. Open the chest and eat the golden apple
5. Watch the health/heart bar animation when regenerating
   ---> The regeneration animation isn't animating correctly, as it stutters.