Moving subwindow on Android devices


For Chrome browser on Android phone (Samsung Galaxry S5 in particular), when I drag a subwindow all the way up to the top of the browser window, the subwindow cannot be dragged/moved past beyond browser window content (this is the current behavior of subwindow in Vaadin Sampler demo as well). Is there a way to make the subwindow move past beyond the visible browser content boundry?

Our case is that when the user is entering text in a text box and the Android keyboard rolls up, if the focused text box is at the very bottom of the subwindow, the keyboard is covering up most of the subwindow. There is no way to view or tap the text box, enabling the scrollbar for the subwindow content does not help either.

Any help is greatly appreciated!