Because this is still in the release notes of the 14.3 😬
Known Issues
Repeated Build & Run targeting iOS 16.1 and later simulator runtimes may sometimes result in a hung launch. (101990080)
Workaround: Reboot the simulator device and reattempt the launch.
pchelnikov
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Hi, have you solved the issue? Seems like we're facing the same issue and can't find a solution.