title: .sink method from Combine not working on iOS 13.3
body: <p>I'm using sink method to call function when variable value changed.
  Code working on iOS 13.2.2 but not on iOS 13.3. Function segmentedChanged not called when segmentedSelected variable changed.</p>
  
  <pre><code>public class ChooseViewModel: ObservableObject {
  
      @Published var segmentedSelected = Int()
  
  
      init() {
          _ = $segmentedSelected
                  .debounce(for: .seconds(0.1), scheduler: DispatchQueue.main)
                  .sink(receiveValue: self.segmentedChanged(indexValue:))
  
      }
  
      func segmentedChanged(indexValue segIndex: Int) {
        print(segIndex)
      }
  
  }
  </code></pre>