I figured out, that the autopilot will not follow the LNAV-Profile sometimes. The active waypoint in the FMS wont update in that case aswell.
In VNAV-path, the descend-rates are pretty high at the beginning and the autopilot is ignoring overspeed, while trying to get the descend path (eventually a result, as the AP switches from vnav-idle to MCP-spd after a few seconds in descend).

Greets

example-pic

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yes, there's always that problem. There are also serious problems with the descent and the automatic throttle.

I also have this problem with LNAV, it missed the active waypoint and then the autopilot didn't know where to fly.

AIIR#6

Here you go, the zipfile with the saved scenario

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Here an example for interesting behavior in VNAV descend and Lvl. Change mode

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Yes I have seen the Lnav and vnav issues too. I also get the autopilot dis connecting especially at lower altitudes, very strange behaviour.

Same problem here

I also have problems with LNAV not following the course.  This plane is pretty useless as a simulation if this isn't fixed.  I would not have purchased had I known this was an issue.

Same here, seems to be an error when trying to compensate a curve at high speed, tried at lower speed and the error did not happened, also if you try to turn arround it shows a corrupted distance, also i notice that the B and A altitude restrictions are not computed into the star correctly, tring to enforce it manualy as a fixed altitude like 11000A as 11000 seens to fix also the lost lnav for me

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Aircraft (777-300) 1.3.2 will follow the entire flight plan with he exception of the approach, As soon as I start the approach the plane starts banking to the left and then starts flying straight. What is going on?

By the way this happens on MFSM 2020