Push notification bug on IOS

Description:

If you activate the switch to receive the whole message text in the push notification settings, then you receive only a notification, that you got a message, but no text.
If you turn it off like on my screenshot, then you get the notification and the message text.

Steps to reproduce:

1. Go to Admin -> Push Notifications -> Privacy
2. Activate the 3rd switch "Fetch full message content from the server on receipt"
3. Then you can't receive message text in the IOS notification anymore. On Android you receive the full text, no matter if the switch is active or not.

Expected behavior:

Switch is on and you receive full message text notification on Android and IOS.

Server Setup Information:

Version 5.1.0
Deployment ID 3ZGvzNj9SiZEouZR2
Apps Engine Version 1.34.0
Node Version v14.19.3
Database Migration 281 (September 8, 2022 1:52 PM)
MongoDB 4.4.13 / wiredTiger (oplog Enabled)

Commit Details
HEAD: (34df27ac1)
Branch: HEAD
PID 1

Client Setup Information

• iPhones with IOS

Start by reproducing the issue on an iPhone using Admin → Push Notifications → Privacy with “Fetch full message content from the server on receipt” enabled, and compare the result with Android. Trace the iOS push-notification handling from that setting; done means the iOS notification includes the full message text when the switch is enabled.