Minecraft wiki entry for Development_versions, associated text: Implemented a fix to ensure the player's mount updates all riders to ensure consistent smooth rotation for all riders.
The delayed_attack behavior no longer causes mobs to freeze when they lose their target.
Item tags can now be toggled in the UI using /gamerule showtags.
The on_unleash event is now triggered correctly when unleashing from a fence.
The 'Create New World' button text is now using the global color component.