[TIMOB-11608] Android: TextField and TextArea - Black stripe appears above the text field at the bottom of the screen

Description: Black stripe appears above the text field at the bottom of the screen. Occurs on some devices (Galaxy Nexus (4.1.1), Samsung Galaxy SIII (4.0.4)). Does not occur on Android Emulator, Droid 3 (2.3.4) and LG VS910 4G (2.3.6). This is not a regression, the behavior exists on 2.1.3 and 2.1.2 as well. Steps: 1. Run the following code:

var _window = Ti.UI.createWindow({
    backgroundColor : 'white'
});
  
var textField = Ti.UI.createTextField({
			color : '#336699',
			backgroundColor : '#eee',
			bottom : 10,
			left : 10,
			width : 250,
			height : 60,
			borderStyle : Ti.UI.INPUT_BORDERSTYLE_ROUNDED
		});
		_window.add(textField);

		var textArea = Ti.UI.createTextArea({
			borderStyle : Ti.UI.INPUT_BORDERSTYLE_ROUNDED,
			backgroundColor : '#eee',
			color : '#336699',
			top : 10,
			left : 10,
			width : 250,
			height : 60
		});
		_window.add(textArea);
		
		_window.open();

2. Dismiss two alerts 3. Click on the text field at the bottom of the screen to invoke the soft keyboard. 4. Press hardware "back" button 5. Repeat steps 2 and 3 several times Actual result: Black stripe appears above the text field Expected: Should not see any black stripes above the text field