getInitialNotification not working on iOS - react-native-firebase

Question

I am using react-native-firebase version 5.3.1.
and pod Firebase/Messaging version 5.20.1.
On iOS, getInitialNotification is always returning null.
It is working fine on Android though.
onNotification and onNotificationOpened working fine on both platforms.
Should I enable remote notification from xcode capabilities ? (I tried and still no luck)
Here is my AppDelegate.m
/**
* Copyright (c) 2015-present, Facebook, Inc.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
#import "AppDelegate.h"
#import <React/RCTBridge.h>
#import <React/RCTBundleURLProvider.h>
#import <React/RCTRootView.h>
#if __has_include(<React/RNSentry.h>)
#import <React/RNSentry.h> // This is used for versions of react >= 0.40
#else
#import "RNSentry.h" // This is used for versions of react < 0.40
#endif
#import <FBSDKCoreKit/FBSDKCoreKit.h>
#import "SplashScreen.h"
#import "RNGoogleSignin.h"
#import "RNFirebaseNotifications.h"
#import "RNFirebaseMessaging.h"
#import <Firebase.h>
#implementation AppDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
[FIRApp configure];
[RNFirebaseNotifications configure];
RCTBridge *bridge = [[RCTBridge alloc] initWithDelegate:self launchOptions:launchOptions];
RCTRootView *rootView = [[RCTRootView alloc] initWithBridge:bridge
moduleName:#"wiy"
initialProperties:nil];
[RNSentry installWithRootView:rootView];
rootView.backgroundColor = [[UIColor alloc] initWithRed:1.0f green:1.0f blue:1.0f alpha:1];
self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];
UIViewController *rootViewController = [UIViewController new];
rootViewController.view = rootView;
self.window.rootViewController = rootViewController;
[self.window makeKeyAndVisible];
// Facebook react-native SDK
[[FBSDKApplicationDelegate sharedInstance] application:application
didFinishLaunchingWithOptions:launchOptions];
[SplashScreen show];
return YES;
}
- (void)applicationDidBecomeActive:(UIApplication *)application {
[FBSDKAppEvents activateApp];
}
- (BOOL)application:(UIApplication *)application
openURL:(NSURL *)url
sourceApplication:(NSString *)sourceApplication
annotation:(id)annotation {
return [[FBSDKApplicationDelegate sharedInstance] application:application
openURL:url
sourceApplication:sourceApplication
annotation:annotation
] || [RNGoogleSignin application:application
openURL:url
sourceApplication:sourceApplication
annotation:annotation
];
}
- (NSURL *)sourceURLForBridge:(RCTBridge *)bridge
{
#if DEBUG
return [[RCTBundleURLProvider sharedSettings] jsBundleURLForBundleRoot:#"index" fallbackResource:nil];
#else
return [[NSBundle mainBundle] URLForResource:#"main" withExtension:#"jsbundle"];
#endif
}
- (void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification {
[[RNFirebaseNotifications instance] didReceiveLocalNotification:notification];
}
- (void)application:(UIApplication *)application didReceiveRemoteNotification:(nonnull NSDictionary *)userInfo
fetchCompletionHandler:(nonnull void (^)(UIBackgroundFetchResult))completionHandler{
[[RNFirebaseNotifications instance] didReceiveRemoteNotification:userInfo fetchCompletionHandler:completionHandler];
}
- (void)application:(UIApplication *)application didRegisterUserNotificationSettings:(UIUserNotificationSettings *)notificationSettings {
[[RNFirebaseMessaging instance] didRegisterUserNotificationSettings:notificationSettings];
}
#end