Fabric's `Answers Custom Event` is not working before closing the app - Android

Question

I have a function which gets called before you close the app or remove it from recent tasks. To create the custom event, I am using Fabric's CustomEvent.

I am getting events from other screens where app is in the foreground but I don't receive any even before closing the app.

clearApplicationData() gets called before app is closed.

Please refer the below code:

public void clearApplicationData(Context context, String clearedFrom) 
{

    Answers.getInstance().logCustom(new CustomEvent("CLEAR_EVENT")
            .putCustomAttribute("Data cleared from", clearedFrom));
}

What could be the issue?