[AC-4406] TextField doesn't detect spaces until adding some other charsets when aligned to the right

writing in the text field with the alignment set right when writing a not detect space to write another character. How to reproduce:

var field = Ti.UI.createTextField({
    textAlign:'right'
});

$.index.add(field);

Type: "Test." !A.png|thumbnail! Type: "Test. " (add space key 3 or 4 times, here is the bug, it doesn't detect the spaces) !B.png|thumbnail! Type: "Test. n" (add n key, the spaces appear now) !C.png|thumbnail! With more than one space is normal to this to happen, depending on the browser and SO, but when I type just one space, it doesn't appear, this is an image: !Screen Shot 2016-09-01 at 19.00.35.png|thumbnail!