IOS Firebase messaging token often refreshed after app has been terminated.

[hongmingu]

I'm new in flutter ios.

I found some case that Ios firebase messaging token has been changed after ios app has been terminated.

Its not exactly on every case of terminating app, but almost when I tried terminating it as 5~6 times, I found that firebase_messaging token is changed and old token is not available anymore. Therefore messaging is not working correctly because server does not know client token is changed or not.

Why this issue has created?

Is that any way to prevent this refreshing token issue?