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ArcballCamera.rotate runtime error

Hi:
I’m using Xcode 11.4.1, macOS version 10.15.4.
I tried to run project 05-lighting-fundamentals and 06-textures on an iOS simulator, but when I drag my mouse over the simulator screen, it gives me runtime error.


But the code works on a real device.

Related thread: SIMD BADACCESS Error?

@jiangwei221 Do you still have issues with this?