Multiple subscribes to AFS Collections cause issues

[jamesdaniels]

Version info

Angular: 4.3.6

Firebase: 4.5.0

AngularFire: 5.0.0-rc.1

How to reproduce these conditions

https://stackblitz.com/edit/angularfire-db-api-hbhkqx

Expected behavior

The list would not be duplicated by the .subscribe()

[alexbjorlig]

@jamesdaniels do you now if there is a workaround to this for now? My objective is to get notified when the collection has data (to update loading indication in the UI). I tried with the do operator, but with no success.