ios – Can’t iterate filtered Dictionary in Swift

So Im currently developing an app in Swift/SwiftUI for the first time and I’ve run into an issue I don’t quite understand.
What Im ultimately trying to achieve is to fetch data from a backend API I’ve already built and to display that in a sort of “calendar” view inside the app. Im trying to list all the events of the day on the screen with a DatePicker at the very top to choose the the date. I’ve built this up with a dummy dictionary of data to first try to get the looks of it right.

import SwiftUI

struct EventDot: View {
    let minute: Int
    
    var body: some View {
        let position = CGFloat(minute) / 60.0
        
        if position < 1 {
            Circle()
                .foregroundColor(.blue)
                .frame(width: 13, height: 13)
                .offset(x: position * UIScreen.main.bounds.width)
                .onTapGesture {
                    print("Tapped at minute \(minute)")
                }
        } else {
            EmptyView()
        }
    }
}

struct PlanView: View {
    let minutesArray: [Int: Int] = [0: 15, 15: 1, 12: 36, 7: 55]
    
    @State var selectedDate = Date.now
    
    @State var events: [Int: String] = [:]
    
    var body: some View {
        VStack {
            Text(selectedDate, style: .date)
            DatePicker("Datum", selection: $selectedDate, displayedComponents: [.date]).bold()
            
            Divider()
            
            ScrollView {
                VStack(spacing: 0) {
                    ForEach(0..<24, id: \.self) { hour in
                        Text("\(hour):00")
                            .frame(maxWidth: .infinity, alignment: .leading)
                            .padding(.leading, 10)
                            .padding(.top, 40)
                            .font(.headline)
                        
                        ForEach(events.filter { $0.key == hour }, id: \.self) { key, value in
                            
                        }
                        
                        if let minute = minutesArray[hour] {
                            EventDot(minute: minute)
                                .padding(.horizontal, 0)
                                .frame(maxWidth: .infinity)
                        }

                        Divider()
                            .background(.black)
                            .padding(.horizontal, 10)
                    }
                }
            }
        }
        .padding()
        .onAppear {
            events = minutesArray.reduce(into: [:]) { result, pair in
                let (hour, minute) = pair
                result[hour] = "Event at \(hour):\(minute)"
            }
            
            print(events)
        }
    }
}

#Preview {
    PlanView()
}

This code works fine, except that whenever I try to filter/iterate over the events of a specific hour XCode shows me this: “Failed to produce diagnostic for expression; please submit a bug report (https://swift.org/contributing/#reporting-bugs)”

Either I’ve found a bug in Swift or Im missing something that XCode is only displaying a a cryptic message.