Notification titles and group name not showing in iOS

I'm using version 1.11.9 of the Element iOS application and have set up notifications using Sygnal. However, I'm not receiving the notification title and group name in the notifications.

Steps to Reproduce:

Install Element iOS version 1.11.9.
Set up notifications using Sygnal.
Send a notification.

Expected Behavior:
The notification should display the title and group name.

Actual Behavior:
The notification does not display the title and group name.

Version:
Element iOS: 1.11.9

Additional Information:

Repository: [element-hq/element-ios](https://github.com/element-hq/element-ios)
Notification service: Sygnal

I've verified that the notification payload includes the title and group name.
Other notification attributes (message content) are displayed correctly.

Environment:

Device: [iPhone XS, iPhone 13]
OS: [IOS 17.5.2 , iOS 17.5.1]

Additional Context:
I've opened this ticket to seek assistance in resolving this issue. Please let me know if any additional information is needed or if there are any suggested steps to troubleshoot further.