I'm using Firebase Realtime Database and Cloud Functions. For the past few months it has been working great and Cloud Storage hasn't been activated. However, now I have noticed that a few MB of Cloud Storage have been used and I don't understand where it's comming from. I haven't actively made any calls to them. Could it be that the database or functions are using some of the space in Storage? I have also attached screenshot of Storage usage.
Thanks for your help in advance!