Virtual Keyboard, it's not working

currently, I am creating a mobile game,
and trying to use the virtual keyboard, in ue4 ,
but it’s driving me crazy because it’s not working as I wanted to,
I found a sample from game call “injustice 2”
when the keyboard pops out, it comes with a pop-up window like this,

but in injustice 2
it showed like this,

it can write directly on the forum, on the infinity blade 3, it has the pop-out window to write on.

how can I achieve this, please tell me thanks for reading.

They just added support for this in 4.16

As far as I can tell the functions mentioned on trello aren’t available for blueprints but the keyboard does work, you just won’t know where to move your UI.