SwiftUI Playground Doesn't Update Observable

Was running through some test applications in Xcode's playground using SwiftUI when I ran into some very strange behavior using Observable Objects.

Code Block swift
import SwiftUI
import PlaygroundSupport
import Combine
class Counter: ObservableObject {
  @Published var count: Int
   
  init(_ initialCount: Int) {
    self.count = initialCount
  }
   
  func increment() {
    count += 1
  }
   
  func decrement() {
    count -= 1
  }
}
struct CountersView: View {
  @ObservedObject var counter1 = Counter(0)
   
  var body: some View {
    CounterView(counter: counter1)
  }
}
struct CounterView: View {
  @ObservedObject var counter: Counter
   
  init(counter: Counter) {
    self.counter = counter
  }
   
  var body: some View {
    HStack {
      Button { counter.decrement() } label: { Image(systemName: "minus.circle") }
      Text("\(counter.count)")
      Button { counter.increment() } label: { Image(systemName: "plus.circle") }
    }
  }
}

Given the following setup, when you run the playground and start incrementing / decrementing the values, the initial click / action is not updated in the UI immediately. Following the first action, all other actions update the UI accordingly, but the state seems to be behind by 1 value.

Example:

count: 0

• click increment*

count: 0

• click increment*

count: 1

But under the hood, the class has the value at 2

This is where things get more interesting is if you change the CountersView to have the following body

Code Block swift
var body: some View {
    CounterView(counter: counter1)
    CounterView(counter: counter1)
  }

Then the UI will work correctly and actually show the real count value and update accordingly.

Is this a bug or am I missing something?