I get an error: error: Execution was interrupted, reason: signal SIGABRT. The process has been left at the point where it was interrupted, use "thread return -x" to return to the state before expression evaluation. when running the following minimal playground code in Xcode: Swift import SwiftUI import PlaygroundSupport struct Country: Identifiable {     var id: String { name }     var name: String     var flag: String } struct CountryView: View {     let name: String     let flag: String     var body: some View {         Text(name)     } } PlaygroundPage.current.setLiveView(     ForEach([Country(name: "Italy", flag: "italy")], id: \.id) { country in         CountryView(name: country.name, flag: country.flag)     } ) This is for current Xcode Version 12.4 (12D4e), and beta3. Note that Xcode does not crash. It's the playground execution. Any hints for a workaround? Additional notes: Currently, playground seem to have a lot if issues and it's currently not usable as a whole - even without using SwiftUI there are a lot issues resulting in crashes, which I think is a very bad situation. A crash log is generated when executing the playground. Part of the crash log: Crashed Thread: 0 Dispatch queue: com.apple.main-thread Exception Type: EXC_CRASH (SIGABRT) Exception Codes: 0x0000000000000000, 0x0000000000000000 Exception Note: EXC_CORPSE_NOTIFY External Modification Warnings: Debugger attached to process. Application Specific Information: abort() called CoreSimulator 757.3 - Device: iPad Pro (9.7-inch) (28657173-2D19-4421-B084-2F4DDD658725) - Runtime: iOS 14.4 (18D46) - DeviceType: iPad Pro (9.7-inch) AttributeGraph precondition failure: setting value during update: 5656. Crash Log - https://developer.apple.com/forums/content/attachment/1d99662f-a766-4cd0-a002-a37f7de2dce0