Can't get badge count when app is not in foreground - react native iOS

I can't get the badge count on ios when the app is in the background and closed.I have referred this issue #1824. But it has closed, I didn't get any solution from that.

I am sharing a piece of code what I have used to get notifications

this.notificationListener = firebase      .notifications()      .onNotification(async (notification) => {        const localNotification = new firebase.notifications.Notification({ show_in_foreground: false })          .setNotificationId(notification.notificationId)          .setTitle(notification.title)          .setBody(notification.body)          .setData(notification.data)          .android.setChannelId("fcm_default_channel")          .android.setSmallIcon("@drawable/wasfat")          .android.setAutoCancel(true)          .android.setColor("#b61b33")          .android.setPriority(firebase.notifications.Android.Priority.High);        let badgeCount = await firebase.notifications().getBadge();        firebase.notifications().setBadge(badgeCount + 1);        firebase.notifications().displayNotification(localNotification).catch(err => { });      });

from the above code, I'm getting notification very fine in all cases. But I'm able to get badge count, only app is in the foreground.

Please suggest, If anything I have missed to get badge count when the app is in the background and closed.

I am facing this only on ios. For android, it is working fine without the setBadge() method.

Platform: iOS react-native: 0.61.5react-native-firebase: 5.5.6

Thanks for any help.