PawnMovementComponent changed in 4.7!!!??

Today … I tore open our codes … for more than 10 hours I toiled to figure out why my helicopter no longer flies.

After many hours of toiling and hacking and digging.

Well… apparently. In our current version 4.7.3 . AddMovementInput no longer works on floating pawn.

And 5 minutes ago . I opened 4.5 It works.

What did epic change ? And why?
Any idea?

I scanned the entire changelog for 4.7 . Nothing. Not a single word about floatingpawnmovementcomponent