Device: iPhone 16 Pro Max & iPad Air M4
Operating system: iOS 27.0 & iPadOS 27.0
I’ve noticed when I resume a longer flight from AP+, the airplane will pull to the right (always to the right) and depart the LNAV track even though I come back with [AP ON] and all the annunciators look correct.
The remedy: select the next point in FPL and choose “Direct To (continue FPL)” - then the plane rejoins the intended track - once that happens, I delete the DIRECT waypoint the system auto created and it’s as if nothing happened.
Happened to me on KMEM-WSSS recently for sure, cannot remember the other one, but it was a long one too. Shorter AP+ resumes don’t seem to have problems at all.