Bitwarden iOS, 2.15.0 (1225)
Vault Timeout - 1 minute
Vault Timeout Action - Lock
Unlock with Face ID - Enabled
Start Bitwarden on the phone.
Swipe up from the bottom of the screen to view the Home Screen
Wait for one minute
Tap Bitwarden again to start the app.
The app crashes before it tries to use Face ID
If you tap the app again, it starts normally and uses Face ID to unlock.