Firebase iOS key restriction not working

Hello,

We have put restriction on the Firebase keys through the Google API console, and it’s working correctly for the Android key (app ID + SHA1) and the web key (IP address).

But we are not able to make it work for the iOS key (bundle ID).

We put our app bundle ID in the key restriction, but then, our iOS app won’t connect to Firebase and show this error message: "Requests from this ios client application <empty> are blocked"

According to the <empty> in the error message, it seems the bundle ID is not passed to Firebase when the iOS app try to connect.

Do you have any idea how we can correctly pass this bundle ID for iOS ?
We have been searching on the doc and forums for several days but without any success…

Thanks for your help !