Please do not forget to add a link to a Playground to get a faster answer:
playground:Babylon.js Playground
Expected result: maze falls on the ground
Current result: The maze doesn’t fall on the ground, it’s some distance from the ground; additionally only loading models will have this problem.
May I ask why the loaded model does not fall when it falls to a certain height under the action of the physics engine, I want the model to fall on the ground.3q very much~
Hello! We aren’t able to use your playground as it’s loading models from your local environment 
Please see
Using External Assets In the Playground | Babylon.js Documentation (babylonjs.com)
The fact that you’re adding multiple children to an empty mesh, however, makes me suspect this is an issue with how the compound physics body was set up. Please check Compound Bodies | Babylon.js Documentation for guidance.
Thanks for your reply, I’ll look into the research documentation again.
