Reproduction steps:
1. Open project in "MobileNotificationsBug.zip"
2. Build the project for iOS and Deploy it to an iOS device using Xcode
3. Allow notifications when prompted
4. A 5-second timer will start and when it reaches 0 a Notification will be pushed
5. The notification has the Data field set to null "PushNotificationTest.cs" line 70

Unexpected behaviour: when the notification has been pushed the Game crashes due to unhandled 'NSInvalidArgumentException'

Reproducible with: 2018.4.22f1, 2020.2.0a13

Devices tested:
Reproducible with:
VLNQA00310 iPad Pro 12.9 (iOS 13.4.1)
VLNQA00204 iPhone 5C (iOS 10.3.3)

Few lines from stack trace (full trace in edits):

• thread #1, queue = 'com.apple.main-thread', stop reason = signal SIGABRT

frame #0: 0x0000000183c6cd88 libsystem_kernel.dylib`__pthread_kill + 8
frame #1: 0x0000000183b851e8 libsystem_pthread.dylib`pthread_kill$VARIANT$mp + 136