Combat update exclusive
When using any item that cannot break blocks in creative (swords or trident) and punching blocks while walking, running, jumping or falling the player stutters but does not slow down (like when in older versions you would go away from spawn and started stuttering)
When you stutter your player model freeze for what it seems 1 tick. Other entities are unafected. This does not occur when aiming at the sky or an entity or in survival mode or adventure mode.
The effect is huge because it sometimes prevents from jumping over 1 block high obstacles, and if you click fast enough you can freeze in the air for a bit of time.
Please fix asap