Missing iOS 13 and iOS 14 simulator in Xcode 12

After updating my Xcode to 12.0, all iOS 13 simulators are gone and there are also no iOS 14 simulators at all. Also I can't create any. Is there a way to fix this?

Edit: I already tried to reinstall Xcode. Strange that the Xcode 12 beta worked good next to the Xcode 11.x installation...
I am seeing this too. The iPhone 11 simulators keep getting "deleted" from the simulator list. I believe this is down to an issue in CoreSimulator 732.17, but I am still testing that theory.
Yeah, I'm pretty sure xcrun simctl erase all is actually deleting the running simulators in CoreSimulator 732.17.
I'm facing the same issue after updating to xcode 12.
Missing iOS 13 and iOS 14 simulator in Xcode 12
 
 
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