I mitigated this via app documentation:
...you may move the keyboard around on the screen in different ways by using the keyboard layout button found at the lower right corner of the keyboard.
You may simply press, hold, and start dragging the keyboard layout button to reposition the entire keyboard dialog. Or tap the button for a menu of layout choices.
My app runs on an LG Tablet. This feature may vary by manufacturer?
Further, at times I programmatically hide the keyboard:
Dim IME As IME
IME.HideKeyboard