When a player has levitation 255 and is hovering in the air, and then throws a projectile (snowball, enderpearl, egg, thrown potion) the projectile shoots upwards into the air as if the PROJECTILE has levitation, not the player. The projectile returns to the ground after a minute, having shot so high up in the air.

Before this is dismissed as a duplicate of MC-10755 [Effects with amplifiers over 4 are not supported] or MC-98222 [Bows/Arrows do not work correctly with levitation levels 128-255], I would like to point out that I was able to throw snowballs with levitation 255 just fine in previous versions before 1.9 pre-4. Therefore I believe this is a bug, seeing as snowballs worked fine for me in the past while hovering with levitation 255 but now they act very strangely.