Fallout Shelter on iOS.

Restaurant tier 2 (3 cells) on the 1st level and 7th connected together. When dweller need to go through room on the 7th level he flies upwards and then downwards.

And so on, next to one on 1st level there is an another restaurant, where dwellers simply teleports to.

Video (just flying, no teleporting):

youtube.com / watch? v=VCRJBg61VSk (remove spaces)

Had this issue but once he leveled up in the wasteland he came back without his superpowers of flight.

I also have this problem and i have what looks like train of people flying ever where