Version 1.9 Minecraft Page

By adding Dragon’s Breath to a splash potion, you create a Lingering Potion. When thrown, it leaves a cloud of area-of-effect vapor that applies its status for 1/4 of the normal duration. These are used to craft tipped arrows.

Prior to 1.9, The End was a barren, boring place: a single island, a dragon that flew in predictable loops, and a few Endermen. That was it.

Version 1.9 turned The End into a full dimension. version 1.9 minecraft

Use Timings v2 (built into Paper 1.9):

/timings report

Also WarmRoast or YourKit for deeper CPU profiling. By adding Dragon’s Breath to a splash potion,

This is the defining characteristic of the update. The developers sought to move combat away from rapid-clicking spam towards a timing-based tactical system.

Boss fights changed drastically. The version 1.9 Minecraft Ender Dragon: Also WarmRoast or YourKit for deeper CPU profiling

This is widely considered a much harder, more cinematic fight.