The Bug:

Goats will occasionally move their head left or right for a split second before performing a long jump.

Steps to Reproduce:

• Build the setup shown in the attachment below. setup.png
• Spawn a goat on either of the 2 blocks.
• Alter the goat's data through the use of the following command to make it perform a long jump:

/execute as @e[type=minecraft:goat,limit=1,sort=nearest] run data modify entity @s Brain.memories."minecraft:long_jump_cooling_down".value set value 1

• →  Notice how goats will occasionally move their head left or right for a split second before performing a long jump.