Can't hold SHIFT key for flying down in creative-Android Tablet

I can't get down when fly in creative anymore after 0.15.0.I using SKYPRO CARTON TABLET and I use mouse and keyboard to support it.TQ.I set keyboard layout "QWERTY" in MCPE.It only happen in 0.15.0 since Beta update not realm update.It does not same as MCPE-10353.MCPE-10353 said keyboard layout is dead/missing but you need to settings it.When I flying down using third view,the player is sneaking.This is a missing features.