[iOS 17.1.1 issue] MSMessageLiveLayout not rendering after MSMessagesAppViewController.willBecomeActive in iOS 17.1.1

Hello dear community,

I have an iMessage extension running perfectly on iOS 16.4, but on 17.0.1 and 17.1.1 it's having real issues. Messaging in iMessage on the iOS 17.0.1 simulator isn't working at all.

MSMessageLiveLayout works perfectly on iOS 16.4, but on iOS 17.1.1 (physical iPhone 15, 14, 13, 12, SE 2020) the MSMessagesAppViewController won't render after didStartSending and subsequent willBecomeActive. The iPhones will just show "Loading...". I debugged through it, couldn't find any issues and works perfectly fine on iOS 16.4 both in the simulator and on a physical device. I'm debugging through the physical devices with XCode, but couldn't find any root cause on why.

Has anyone experienced similar issues with MSMessagesAppViewController in iOS 17.1.1? Any ideas on how to fix this?

Thanks, Jan