I discovered a funny little bug with the 737 (-900):
When you fly that plane at around >40‘000ft you basically get unlimited fuel. There is nearly 0 fuel consumption even though your throttle is at 100%.
Combining that with another bug, one could fly up to 20-50 hours with that plane. You simply have to click on „Pushback“ before takeoff. Thanks to that you get like an additional 30% of thrust.
I’m currently flying at 51‘500ft at Mach 1.3, throttle at 0%, speed increasing and 20 (!) hours of fuel left. I’m able to fly 10‘500nm with a Boeing 737-900. Another weird thing was that both engines suddenly flamed out at 48‘000ft, but I was able to restart them.
I really don’t think that all those things should be possible. Maybe you devs should look into this to figure out whats wrong here.