I don’t really know how to explain this in words, so I have a video.
(I advise that you watch it in 1080p or 720p)
Device: iPad Pro 12.9 in. (2015/1st Gen), not Jailbroken.
OS: iOS 11.1.1
IF Version: 17.04.1 (Legal, from App Store)
Airport: PHNY, Hawaii
Connection was yellow.
I’m assuming that this is something that the Airport Editors can fix? Similar to that airport that was above the ground and had glitchy terrain.
My best description is that as soon as I spawn in, my plane suddenly starts falling through the floor. Eventually, it goes to a negative altitude.