Yeah, seems they don't have much coverage in Indonesia and the Philippines. I wonder if FR24 (which was showing the flight path correctly all along) depends on private uploaders there, or do they have other data sources to fill the gaps.
It's called "Estimations", and is in the Visibility tab of Settings. By default it will show up to 4 hours of estimated positions.
I can't say whether that's what was shown for this flight or not, as it won't show historical data for SPAR19.