title: Notification can not display correctly when app in background ( React Native )
body: <p>I have an app that using Firebase push remote notification, one client send notification message like below: </p>
  
  <pre><code>            body: JSON.stringify({
                  'to' : 'token',
                  'notification' : {
                      'title' : ' ' + this.currentUser.email + ' send you a message !',      
                      'body' : text
                  },
                  'data': {
                      'senderName' : this.currentUser.email,
                      'senderUid': this.currentUser.uid 
                  }
  
              })
  </code></pre>
  
  <p>and one client implement the method that receive notification : </p>
  
  <pre><code>           firebase.notifications().onNotification((notification) =&gt; {
                      const showNotification = new firebase.notifications.Notification()
                          .setNotificationId('notificationId')
                          .setTitle(notification.title)
                          .setBody(notification.data.text)
                          .android.setChannelId('channel_id_foreground')
                          .android.setSmallIcon('ic_launcher');
                      firebase.notifications().displayNotification(showNotification)
              });
  </code></pre>
  
  <p>When my app running on foreground, the notification show normally, but when in background, it can receive in notification tray, but it not display that notification to the screen of device.</p>
  
  <p><br />
  <br />
  <br />
  <strong>This is how the notification show:</strong></p>
  
  <p><a href="https://i.stack.imgur.com/QXLIJ.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/QXLIJ.png" alt="issue"></a></p>
  
  <p><br />
  <br />
  <br />
  <strong>I want the notification can display like:</strong> </p>
  
  <p><a href="https://i.stack.imgur.com/wo0Fd.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/wo0Fd.png" alt="correct"></a></p>
  
  <p><br /></p>
  
  <p>Addition: If I close app by swipe out and send the notification, my app is going to be crashed.</p>
  
  <p><br /></p>
  
  <p>Anybody can help me ?</p>