If you put the model on item display it can be in the wrong position, you can fix this by add extra (scale * 0.5F) to the y position. That should do the trick.

A Pre-made Minecraft Server 1.21.1 that supports Java Edition and Bedrock Edition to play in one running server. Java(PC/Laptop) players can join Bedrock users playing at PC/Laptop, Mobile Device, ...

How do you test the latest Minecraft features? These snapshots are the very first iteration of Minecraft updates and are a way for Mojang to test out bug fixes, technical changes, and even new blocks, ...