The Bug:

Goats can sometimes fall off edges when ramming entities.

Steps to Reproduce:

• Build an isolated line of blocks in the air.
• Summon a cow with NoAI:1b on the edge of the line of blocks.

/summon minecraft:cow ~ ~ ~ {NoAI:1b}

• Summon a goat.
• Alter the goat's data through the use of the following command, so that it rams the cow:

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

• →  Notice how goats can sometimes fall off edges when ramming entities.