On ios mobile devices, WeChat browser and safari browser on iPhone 12 will display abnormal effects.
https://playground.babylonjs.com/#1KUJ0A#305
When rotating the model, there will be a shadow of the model
Are you using WebGL 2 or WebGL 1? You can try to switch to WebGl 1 because Apples implementation of WebGL 2 is still buggy. Maybe it helps.
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