Unity + Firebase emulator suite: FirestoreSettings: Changing it at runtime crashes Unity

Hey :) We just set up the firebase emulator suite with success.
**Goal:** We want to make our Unity project use that local instance.

We tried
` FirebaseFirestore db = FirebaseFirestore.DefaultInstance;
db.Settings = db.Settings.WithHost("localhost:8080").WithSslEnabled(false).WithPersistenceEnabled(false);`

But it crashes unity. Is there a way to set this yet in the Unity Firebase SDK?

Also creating a new
FirebaseFirestoreSettings objects with the same values result in a crash when assigned to the current FirebaseFireStore.DefaultInstance.

Environment:
Editor

Unity Version:
2019.3.11f1

Firebase SDK:
6.15.0

Used Packages:
Analytics
Crashlytics
FireStore
RemoteLinks
Auth