Firebase Database Persistence Bug in Android

I have been using and testing my Android app thoroughly for the last 2 weeks.

I am using the Firebase Realtime Database exhaustively in my app and the most important thing is that, my app needs to work offline seamlessly.

I have a splash screen, where I sync all the data for a particular user node just while starting and proceed.

I using keepSynced(true); and setPersistenceEnabled(true); for sure.

Have noticed a serious issue, which is causing a lot of problem.

Scenario 1

I run the app for the first time with internet connection, the app works fine.

Scenario 2

I run the app for the first time without internet connection, nothing works. No callback is fired.

Scenario 3

I run the app consecutively with/without internet connection, it works fine.

Scenario 4

But, when I run the app after 1 or 2 days without internet connection, nothing works. No callback is fired.

I seems that the disk persistence is cleared automatically, that is why the data is not available offline and no callback is fired.

So, how can I control when the disk persistence is cleared? Is there a way to make sure that the persistence is never cleared? Is there a way to configure the size of the disk persistence also?