Banner notifications don’t work for secondary trusted domains

Expected behaviour

When your iOS plays the notification sound I expect to see a notification in notification screen.

Actual behaviour

When you receive a notification from Nextcloud (like an update notification, invitiation to Nextcloud event...) my iOS device will play the iOS notification sound but I don't see anything in iOS' notification screen. It took me a while to figure out that this was coming from Nextcloud.

Note: When I open Nextcloud iOS app, I see notifcations within the Nextcloud app.

Steps to reproduce

1. Install Nextcloud app.
2. Add an account.
3. Leave app (go to iOS main screen, open another app or enter standby).
4. Trigger a notification (the hard part... maybe wait for a plugin update notification).

Your iOS device will now receive that notification and play normal iOS notification sound.
However, when you view iOS notification screen, it's empty (at least nothing new/from Nextcloud shows up).

Open Nextcloud app, touch the notification icon (bell) and you will see that the notification now shown in Nextcloud app correlates to the time your iOS devices played to notification sound.

iOS version

iOS 12.4.x

App version

2.23.8.30

Server configuration

Operating system: Gentoo Linux

Web server: nginx

Database: Percona-Server 5.7

PHP version: 7.3.9

Nextcloud version: 16.0.4

Start by reproducing the notification flow on the iOS app with a secondary trusted domain, then compare the iOS notification screen with the in-app notification bell. Done means notifications from Nextcloud appear in the iOS notification screen as well as inside the app.