you notice it most in small confined areas with corridors or playing against somone who uses Alot of air units.
Quite true. The turning version happens usually in closer quarters.
My suspiscion with the flying version is it's the same code as when a unit drops from off the top of a building
in terms of movement. If a unit who's falling spots a unit in his descent, obviously he shouldn't have a chance to react. But when you tell your flying unit to descend 4 levels and he spots an enemy on level 2, he'll go right on by.
Easiest way to recreate it is by setting up a unit indoors a step or so back from a window.
Have a flying unit facing the appropriate direction outside the building and have him descend facing in.
this doesnt happen very often at all if you play the standard maps as they tend not to be very high.
But when playing on the new tilesets like Dawn City beta with 9 floors(?), or the Burbs set which has 6 levels on a lot of structures it starts to occur more frequently.