Download the app from github repo .
run with ionic serve ,go to login screen and click on username field then the screen jump up with and a scroll bar arise.
when I try this in emulator same is happening . screen jump up and key board comes but after close the key board screen not come down and a scroll bar arise.
my question
is it default behavior or there is any fault ?
Please take a look at the issues on that github repository.
If there is no issue for your problem --> create one there and not here in the forum.
@kuntal this is indeed a bug, but it’s one that we already are aware of 
Hi @mhartington, are you give any quick fix tips ?or I have to wait until final release ?
This is something we’ll be fixing as time goes on. Remember, Ionic 2 is beta 