Updating support lib change behavior of the FAB

Updating support lib to : 
`
compile 'com.android.support:appcompat-v7:25.1.0'
`
`
compile 'com.android.support:design:25.1.0'
`


makes the FAB hide animation working when scrolling down, but the scroll event is never received once the button is hidden. Impossible to show it then...
Do you have any idea ?