Lost half my fuel in 2 hours on AP+

As the title states I took off with 49% fuel remaining, closed my phone on AP+ and restarted on my iPad at home and now it’s saying 23%.

Seems to be just enough to get to Denver but it’ll be cutting it close.

Why did this happen?

They are continuously improving.

This is very frustrating and I hope it fixes soon.

Known issue

I was flying from Kuwait(OKKK) - New York(KJFK) 12hrs with the B77W and my fuel load was Est 17hrs of flight time, I set my AP+ and loaded my flight after 3hrs and 80% of my fuel is gone, It says that only Est. 3hrs of fuel remaining.

This is so annoying