Same crash happened in my project when using enum types in my Swift Data model along with the Swift Data history APIs. I found a less ideal solution to the problem was to use a @Transient property exposing my enum and have the underlying data backed by a more permeative type. @Transient var sessionType: TaskSessionType { get { TaskSessionType(rawValue: sessionTypeRaw) ?? .focus } set { sessionTypeRaw = newValue.rawValue } } private(set) var sessionTypeRaw: Int = TaskSessionType.focus.rawValue