Minecraft 1.14 Pre-Release 2
The merchant can be summoned with a negative age which has the effect that he has the hitbox of a baby villager.
- Activate hitboxes with F3+B
- Spawn a Wandering Trader with an negative age:
- Watch the hitbox of the mob
Here is an example in video: The Wandering Trader can be summoned with a negative age.mp4